Digs

digs

JavaScript challenges are like stealthy ninjas lurking in the shadows 🌃, ready to block your web scraping efforts without you even realizing it. They may not be visible, but their presence can thwart your data collection attempts! Dig into how these challenges operate and explore effective strategies for bypassing them. Time to enhance your web scraping capabilities! 🦾 What Are JavaScript Challenges? Nope, we’re not talking about those fun JavaScript coding challenges we all love. That’s a whole different game... Here, we’re exploring a different type of challenge. 🤔 In the world of bot protection, JavaScript challenges—also known as JS challenges—are the digital bouncers that stand between your scraper and a page's juicy content. They’re there to keep automated scraping bots from accessing a site's data. 🚫 🤖 🚫 Web servers embed these challenges directly into the web pages they deliver to the client. To bypass them and access the site’s content, you need a browser that can execute the JavaScript code within these challenge scripts. Otherwise, you’re not getting in! 🛑 Sites use the JavaScript challenge mechanism to automatically detect and block bots. Think of it as a “prove you’re human” test. To gain entry to the site, your scraper must be able to run some specific obfuscated script in a browser and pass the underlying test! What Does a JavaScript Challenge Look Like? Usually, a JavaScript challenge is like a ghost 👻—you can sense it, but you rarely see it. More specifically, it’s just a script hiding in the web page that your browser must execute to gain access to the site’s content. To get a clearer picture of these challenges, let’s look at a real-world example. Cloudflare is known for using JS challenges. When you enable the Managed Challenge feature of its WAF (Web Application Firewall) solution, the popular CDN starts embedding JavaScript challenges in your pages. According to official docs, a JS challenge doesn’t require user interaction. Instead, it’s processed quietly by the browser in the background. ⚙️ During this process, the JavaScript code runs tests to confirm if the visitor is human👤—like checking for the presence of specific fonts installed on the user’s device. In detail, Cloudflare uses Google’s Picasso fingerprinting protocol. This analyzes the client’s software and hardware stack with data collected via JavaScript. The entire verification process might happen behind the scenes without the user noticing, or it might stall them briefly with a screen like this: Want to avoid this screen altogether? Read the guide on Cloudflare bypass! Now, three scenarios can play out: You pass the test: You access the page, and the JavaScript challenge won’t reappear during the same browsing session.
You fail the test: Expect to face additional anti-bot measures, like CAPTCHAs.
You can’t run the test: If you’re using an HTTP client that can’t execute JavaScript, you’re out of luck—blocked, and possibly banned! (Pro tip: Learn how to avoid IP bans with proxies!). How to Challenge JavaScript Protections for Seamless Web Scraping Want to bypass mandatory JavaScript challenges? First, you need an automation tool that runs web pages in a browser 🌐. In other words, you have to use a browser automation library like Selenium, Puppeteer, or Playwright. Those tools empower you to write scraping scripts that make a real browser interact with web pages just like a human would. This strategy helps you bypass the dreaded scenario 3 (you can’t run the test) from earlier, limiting your outcomes to either scenario 1 (you pass the test) or scenario 2 (you fail the test). For simple JavaScript challenges that just check if you can run JS, a browser automation tool is usually enough to do the trick 😌. But when it comes to more advanced challenges from services like Cloudflare or Akamai, things get tricky… To control browsers, these tools set configurations that can raise suspicion with WAFs. You can try to hide them using technologies like Puppeteer Extra, but that doesn’t always guarantee success either. 🥷 Suspicious settings are especially evident when checking browsers in headless mode, which is popular in scraping due to its resource efficiency. However, don’t forget that headless browsers are still resource-intensive compared to HTTP clients. So, they require a solid server setup to run at scale. ⚖️ So, what’s the ultimate answer for overcoming JavaScript challenges and doing scraping without getting blocked and at scale? Best Solution to Overcome a JavaScript Challenge The issue isn't with the browser automation tools themselves. Quite the opposite, it’s all about the browsers those solutions control! 💡 Now, picture a browser that: Runs in headed mode like a regular browser, reducing the chances of bot detection.


Scales effortlessly in the cloud, saving you both time and money on infrastructure management.


Automatically tackles CAPTCHA solving, browser fingerprinting, cookie and header customization, and retries for optimal efficiency.


Provides rotating IPs backed by one of the largest and most reliable proxy networks out there.


Seamlessly integrates with popular browser automation libraries like Playwright, Selenium, and Puppeteer. If such a solution existed, it would allow you to wave goodbye to JavaScript challenges and most other anti-scraping measures. Well, this isn’t just a distant fantasy—it's a reality! Enter Bright Data’s Scraping Browser: https://www.youtube.com/watch?v=kuDuJWvho7Q&embedable=true Final Thoughts Now you’re in the loop about JavaScript challenges and why they’re not just tests to level up your coding skills. In the realm of web scraping, these challenges are pesky barriers that can stop your data retrieval efforts. Want to scrape without hitting those frustrating blocks? Take a look at Bright Data's suite of tools! Join our mission to make the Internet accessible to everyone—even via automated browsers. 🌐 Until next time, keep surfing the Internet with freedom! JavaScript challenges are like stealthy ninjas lurking in the shadows 🌃, ready to block your web scraping efforts without you even realizing it. They may not be visible, but their presence can thwart your data collection attempts! Dig into how these challenges operate and explore effective strategies for bypassing them. Time to enhance your web scraping capabilities! 🦾 What Are JavaScript Challenges? Nope, we’re not talking about those fun JavaScript coding challenges we all love. That’s a whole different game... Here, we’re exploring a different type of challenge. 🤔 In the world of bot protection, JavaScript challenges—also known as JS challenges—are the digital bouncers that stand between your scraper and a page's juicy content. They’re there to keep automated scraping bots from accessing a site's data. 🚫 🤖 🚫 scraping bots Web servers embed these challenges directly into the web pages they deliver to the client. To bypass them and access the site’s content, you need a browser that can execute the JavaScript code within these challenge scripts. Otherwise, you’re not getting in! 🛑 Sites use the JavaScript challenge mechanism to automatically detect and block bots. Think of it as a “prove you’re human” test. To gain entry to the site, your scraper must be able to run some specific obfuscated script in a browser and pass the underlying test! What Does a JavaScript Challenge Look Like? Usually, a JavaScript challenge is like a ghost 👻—you can sense it, but you rarely see it. More specifically, it’s just a script hiding in the web page that your browser must execute to gain access to the site’s content. To get a clearer picture of these challenges, let’s look at a real-world example. Cloudflare is known for using JS challenges. When you enable the Managed Challenge feature of its WAF ( Web Application Firewall ) solution, the popular CDN starts embedding JavaScript challenges in your pages. Managed Challenge Web Application Firewall According to official docs, a JS challenge doesn’t require user interaction. Instead, it’s processed quietly by the browser in the background. ⚙️ JS challenge During this process, the JavaScript code runs tests to confirm if the visitor is human👤—like checking for the presence of specific fonts installed on the user’s device. In detail, Cloudflare uses Google’s Picasso fingerprinting protocol . This analyzes the client’s software and hardware stack with data collected via JavaScript. Google’s Picasso fingerprinting protocol The entire verification process might happen behind the scenes without the user noticing, or it might stall them briefly with a screen like this: Want to avoid this screen altogether? Read the guide on Cloudflare bypass ! Cloudflare bypass Now, three scenarios can play out: You pass the test: You access the page, and the JavaScript challenge won’t reappear during the same browsing session. You fail the test: Expect to face additional anti-bot measures, like CAPTCHAs. You can’t run the test: If you’re using an HTTP client that can’t execute JavaScript, you’re out of luck—blocked, and possibly banned! (Pro tip: Learn how to avoid IP bans with proxies!). You pass the test : You access the page, and the JavaScript challenge won’t reappear during the same browsing session. You pass the test You fail the test : Expect to face additional anti-bot measures, like CAPTCHAs. You fail the test You can’t run the test : If you’re using an HTTP client that can’t execute JavaScript, you’re out of luck—blocked, and possibly banned! (Pro tip: Learn how to avoid IP bans with proxies! ). You can’t run the test Learn how to avoid IP bans with proxies! How to Challenge JavaScript Protections for Seamless Web Scraping Want to bypass mandatory JavaScript challenges? First, you need an automation tool that runs web pages in a browser 🌐. In other words, you have to use a browser automation library like Selenium, Puppeteer, or Playwright . browser automation library like Selenium, Puppeteer, or Playwright Those tools empower you to write scraping scripts that make a real browser interact with web pages just like a human would. This strategy helps you bypass the dreaded scenario 3 (you can’t run the test) from earlier, limiting your outcomes to either scenario 1 (you pass the test) or scenario 2 (you fail the test). For simple JavaScript challenges that just check if you can run JS, a browser automation tool is usually enough to do the trick 😌. But when it comes to more advanced challenges from services like Cloudflare or Akamai, things get tricky… To control browsers, these tools set configurations that can raise suspicion with WAFs. You can try to hide them using technologies like Puppeteer Extra , but that doesn’t always guarantee success either. 🥷 Puppeteer Extra Suspicious settings are especially evident when checking browsers in headless mode, which is popular in scraping due to its resource efficiency. However, don’t forget that headless browsers are still resource-intensive compared to HTTP clients. So, they require a solid server setup to run at scale. ⚖️ So, what’s the ultimate answer for overcoming JavaScript challenges and doing scraping without getting blocked and at scale ? scraping without getting blocked and at scale Best Solution to Overcome a JavaScript Challenge The issue isn't with the browser automation tools themselves. Quite the opposite, it’s all about the browsers those solutions control! 💡 Now, picture a browser that: Runs in headed mode like a regular browser, reducing the chances of bot detection. Scales effortlessly in the cloud, saving you both time and money on infrastructure management. Automatically tackles CAPTCHA solving, browser fingerprinting, cookie and header customization, and retries for optimal efficiency. Provides rotating IPs backed by one of the largest and most reliable proxy networks out there. Seamlessly integrates with popular browser automation libraries like Playwright, Selenium, and Puppeteer. Runs in headed mode like a regular browser, reducing the chances of bot detection. Runs in headed mode like a regular browser, reducing the chances of bot detection. Scales effortlessly in the cloud, saving you both time and money on infrastructure management. Scales effortlessly in the cloud, saving you both time and money on infrastructure management. Automatically tackles CAPTCHA solving, browser fingerprinting, cookie and header customization, and retries for optimal efficiency. Automatically tackles CAPTCHA solving, browser fingerprinting, cookie and header customization, and retries for optimal efficiency. Provides rotating IPs backed by one of the largest and most reliable proxy networks out there. Provides rotating IPs backed by one of the largest and most reliable proxy networks out there. Seamlessly integrates with popular browser automation libraries like Playwright, Selenium, and Puppeteer. Seamlessly integrates with popular browser automation libraries like Playwright, Selenium, and Puppeteer. If such a solution existed, it would allow you to wave goodbye to JavaScript challenges and most other anti-scraping measures . Well, this isn’t just a distant fantasy—it's a reality! anti-scraping measures Enter Bright Data’s Scraping Browser : Scraping Browser https://www.youtube.com/watch?v=kuDuJWvho7Q&embedable=true https://www.youtube.com/watch?v=kuDuJWvho7Q&embedable=true Final Thoughts Now you’re in the loop about JavaScript challenges and why they’re not just tests to level up your coding skills. In the realm of web scraping, these challenges are pesky barriers that can stop your data retrieval efforts. Want to scrape without hitting those frustrating blocks? Take a look at Bright Data 's suite of tools! Join our mission to make the Internet accessible to everyone—even via automated browsers. 🌐 Bright Data Until next time, keep surfing the Internet with freedom!

Bypassing JavaScript Challenges for Effective Web Scraping

تجاوز تحديات JavaScript لتحقيق كفاءة في استخراج البيانات من الويب

কার্যকর ওয়েব স্ক্র্যাপিংয়ের জন্য জাভাস্ক্রিপ্ট চ্যালেঞ্জগুলিকে বাইপাস করা

Παράκαμψη των προκλήσεων JavaScript για αποτελεσματική απόξεση ιστού

Cómo evitar los desafíos de JavaScript para un raspado web eficaz

دور زدن چالش های جاوا اسکریپت برای اسکرپینگ موثر وب

効果的なウェブスクレイピングのための JavaScript の課題を回避する

Обход проблем JavaScript для эффективного веб-скрапинга

Заобилажење ЈаваСцрипт изазова за ефикасно стругање веба

การหลีกเลี่ยงความท้าทายของ JavaScript เพื่อการขูดเว็บที่มีประสิทธิภาพ

Etkili Web Kazıma için JavaScript Zorluklarını Aşma

موثر ویب سکریپنگ کے لیے جاوا اسکرپٹ چیلنجز کو نظرانداز کرنا

Veb-saytlarni samarali qirqish uchun JavaScript qiyinchiliklarini chetlab o'tish

DUBAI, Dubai, October 7th, 2024, Chainwire/--VENKO, an alien-themed meme coin launched on the Solana blockchain, has seen early traction with notable achievements, including listings on CoinMarketCap and CoinGecko and an all-time high market capitalization of nearly $3 million on Radium. Aims to stand out in the competitive meme coin landscape, VENKO integrates its extraterrestrial theme with planned utility-driven platforms such as Alienium and UAPsnap. Unique Concept and Growing Ecosystem While VENKO draws inspiration from successful meme coins like DOGE, SHIB, and PEPE, it aims to distinguish itself by offering a comprehensive ecosystem centered around extraterrestrial interests. The development team has outlined a roadmap designed to establish VENKO as a leading player in the meme coin market, leveraging its alien theme alongside broader cultural interest in UFOs and unexplained phenomena. Alienium: A Social Hub for UFO and Alien Enthusiasts Alienium, VENKO’s upcoming social platform, is set to serve as a hub for individuals interested in UFOs, aliens, and other unexplained phenomena. Final testing is reportedly complete, and the platform will feature various community-driven activities, including: Exclusive events like movie nights and live discussions.
Alien-themed dating for connecting with like-minded enthusiasts.
Monetization tools allowing content creators to tip, be tipped, and raise funds for projects such as archeological digs and documentaries. Alienium is designed to be a niche social network where users can engage with extraterrestrial topics, using $VENKO as the platform's native currency for premium experiences and features. UAPsnap: Capturing the Unseen In addition to Alienium, VENKO is developing UAPsnap, a platform dedicated to reporting and analyzing unidentified aerial phenomena (UAP). Users will be able to capture and share sightings, analyze data, and connect with others interested in tracking unexplained aerial events. The platform is part of VENKO’s broader strategy to provide utility beyond the meme coin hype by appealing to the growing community of UFO and extraterrestrial enthusiasts. A New Era of Meme Coins VENKO isn’t just about memes and hype. It’s building a long-term strategy, with goals of reaching 10,000 holders and beyond. Plus, it’s surrounded by experienced industry veterans, including those from leading social media platforms like Facebook, helping shape VENKO’s platforms into the go-to hub for alien and UFO enthusiasts. With accelerated marketing and growth campaigns in the pipeline, VENKO is positioning itself to be the No.1 alien meme coin. Roadmap and Future Plans As VENKO continues its development, the project’s roadmap includes significant milestones such as the launch of its first centralized exchange (CEX) listing on BitMart. The team, which includes veterans from leading social media platforms like Facebook, has also announced plans to grow the community to 10,000 holders through targeted marketing and community engagement efforts. Airdrops and other community-focused rewards are also planned as part of VENKO’s long-term strategy to incentivize user participation and drive adoption. Looking Ahead: 2024 and Beyond With ongoing platform development, public tranding, and community-building initiatives, VENKO aims to position itself as a prominent player in the meme coin space, targeting UFO enthusiasts and crypto users alike. The project’s focus on building real-world utility through platforms like Alienium and UAPsnap sets it apart from other meme coins, as it seeks to create a sustainable, community-driven ecosystem. About VENKO VENKO is a meme coin built on the Solana blockchain, combining extraterrestrial themes with real-world utility. It offers unique platforms like Alienium, a social hub for UFO enthusiasts, and UAPsnap, a platform for tracking aerial phenomena. The project aims to become a leading meme coin in the cryptocurrency space by integrating community-driven initiatives with long-term utility. Users can join the VENKO movement today, and get involved with the new alien leader! Contact Mr Marcus Labrinth info@venko.tech This story was distributed as a release by Chainwire under HackerNoon’s Business Blogging Program. Learn more about the program here. DUBAI, Dubai, October 7th, 2024, Chainwire/--VENKO, an alien-themed meme coin launched on the Solana blockchain, has seen early traction with notable achievements, including listings on CoinMarketCap and CoinGecko and an all-time high market capitalization of nearly $3 million on Radium. Aims to stand out in the competitive meme coin landscape, VENKO integrates its extraterrestrial theme with planned utility-driven platforms such as Alienium and UAPsnap. DUBAI, Dubai, October 7th, 2024, Chainwire/--VENKO, Unique Concept and Growing Ecosystem While VENKO draws inspiration from successful meme coins like DOGE, SHIB, and PEPE, it aims to distinguish itself by offering a comprehensive ecosystem centered around extraterrestrial interests. The development team has outlined a roadmap designed to establish VENKO as a leading player in the meme coin market, leveraging its alien theme alongside broader cultural interest in UFOs and unexplained phenomena. Alienium: A Social Hub for UFO and Alien Enthusiasts Alienium, VENKO’s upcoming social platform, is set to serve as a hub for individuals interested in UFOs, aliens, and other unexplained phenomena. Final testing is reportedly complete, and the platform will feature various community-driven activities, including: Exclusive events like movie nights and live discussions. Alien-themed dating for connecting with like-minded enthusiasts. Monetization tools allowing content creators to tip, be tipped, and raise funds for projects such as archeological digs and documentaries. Exclusive events like movie nights and live discussions. Alien-themed dating for connecting with like-minded enthusiasts. Monetization tools allowing content creators to tip, be tipped, and raise funds for projects such as archeological digs and documentaries. Alienium is designed to be a niche social network where users can engage with extraterrestrial topics, using $VENKO as the platform's native currency for premium experiences and features. UAPsnap: Capturing the Unseen In addition to Alienium, VENKO is developing UAPsnap, a platform dedicated to reporting and analyzing unidentified aerial phenomena (UAP). Users will be able to capture and share sightings, analyze data, and connect with others interested in tracking unexplained aerial events. The platform is part of VENKO’s broader strategy to provide utility beyond the meme coin hype by appealing to the growing community of UFO and extraterrestrial enthusiasts. A New Era of Meme Coins VENKO isn’t just about memes and hype. It’s building a long-term strategy, with goals of reaching 10,000 holders and beyond. Plus, it’s surrounded by experienced industry veterans, including those from leading social media platforms like Facebook, helping shape VENKO’s platforms into the go-to hub for alien and UFO enthusiasts. With accelerated marketing and growth campaigns in the pipeline, VENKO is positioning itself to be the No.1 alien meme coin. Roadmap and Future Plans As VENKO continues its development, the project’s roadmap includes significant milestones such as the launch of its first centralized exchange (CEX) listing on BitMart. The team, which includes veterans from leading social media platforms like Facebook, has also announced plans to grow the community to 10,000 holders through targeted marketing and community engagement efforts. Airdrops and other community-focused rewards are also planned as part of VENKO’s long-term strategy to incentivize user participation and drive adoption. Looking Ahead: 2024 and Beyond With ongoing platform development, public tranding, and community-building initiatives, VENKO aims to position itself as a prominent player in the meme coin space, targeting UFO enthusiasts and crypto users alike. The project’s focus on building real-world utility through platforms like Alienium and UAPsnap sets it apart from other meme coins, as it seeks to create a sustainable, community-driven ecosystem. About VENKO VENKO is a meme coin built on the Solana blockchain, combining extraterrestrial themes with real-world utility. It offers unique platforms like Alienium, a social hub for UFO enthusiasts, and UAPsnap, a platform for tracking aerial phenomena. The project aims to become a leading meme coin in the cryptocurrency space by integrating community-driven initiatives with long-term utility. VENKO VENKO Users can join the VENKO movement today, and get involved with the new alien leader! VENKO movement today, VENKO movement today, Contact Mr Marcus Labrinth info@venko.tech This story was distributed as a release by Chainwire under HackerNoon’s Business Blogging Program. Learn more about the program here. This story was distributed as a release by Chainwire under HackerNoon’s Business Blogging Program. Learn more about the program here . here here

VENKO Achieves Key Milestones And Expands Utility With Alien-Themed Ecosystem On Solana

VENKO erreicht wichtige Meilensteine und erweitert seinen Nutzen mit einem Alien-Ökosystem auf Solana

Η VENKO επιτυγχάνει βασικά ορόσημα και επεκτείνει τη χρησιμότητα με το οικοσύστημα με θέμα εξωγήινους στο Solana

VENKO alcanza hitos clave y amplía su utilidad con un ecosistema de temática extraterrestre en Solana

VENKO franchit des étapes clés et étend son utilité avec un écosystème sur le thème des extraterrestres sur Solana

VENKO が Solana 上で重要なマイルストーンを達成し、エイリアンをテーマにしたエコシステムで実用性を拡大

VENKO សម្រេចបាននូវចំណុចសំខាន់ៗ និងពង្រីកឧបករណ៍ប្រើប្រាស់ជាមួយនឹងប្រព័ន្ធអេកូដែលមានប្រធានបទ Alien នៅលើ Solana

VENKO pasiekia svarbiausių etapų ir išplečia naudingumą naudodama ateivių tematikos ekosistemą Solanoje

VENKO постигнува клучни пресвртници и ја проширува корисноста со екосистемот на тема вонземјани на Солана

VENKO atinge reperele cheie și extinde utilitatea cu un ecosistem cu tematică extraterestră pe Solana

VENKO igera ku ntambwe zingenzi kandi ikagura ibikorwa hamwe na ecosysteme yibinyabuzima byabanyamahanga kuri Solana

VENKO möhüm sepgitlere ýetýär we Solanada keseki temaly ekosistema bilen peýdalylygy giňeldýär

VENKO 实现关键里程碑，并通过 Solana 上的外星人主题生态系统扩展实用性

The Day a Robot Helped Me Heal 37 Years of Emotional Pain

Kuna urutix mä robotax 37 maraw chuymajan usuchjasiñatak qullañatak yanapt’itu

Dan kada mi je robot pomogao da izliječim 37 godina emocionalnog bola

El día que un robot me ayudó a sanar 37 años de dolor emocional

Päivä, jolloin robotti auttoi minua parantamaan 37 vuoden tunnekipua

ロボットが37年間の心の痛みを癒してくれた日

Mokolo Robot moko Esalisaki Ngai Na Bikisa 37 Ans Ya Pasi Emotionnelle

Hari Robot Membantu Saya Menyembuhkan Kesakitan Emosi 37 Tahun

जुन दिन एक रोबोटले मलाई 37 वर्षको भावनात्मक पीडा निको पार्न मद्दत गर्यो

Dzień, w którym robot pomógł mi wyleczyć 37 lat bólu emocjonalnego

هغه ورځ چې یو روبوټ زما سره د 37 کلونو احساساتي درد په درملنه کې مرسته وکړه

Bir Robotun 37 Yıllık Duygusal Acımı İyileştirmeme Yardımcı Olduğu Gün

جس دن ایک روبوٹ نے 37 سال کے جذباتی درد کو ٹھیک کرنے میں میری مدد کی۔

Daniel Jeffries Tried To Predict Bitcoin’s Future in 2017: How We Can Learn From It

Daniel Jeffries intentó predecir el futuro de Bitcoin en 2017: cómo podemos aprender de ello

Daniel Jeffries-ek Bitcoin-en etorkizuna iragartzen saiatu zen 2017an: nola ikasi dezakegun bertatik

Daniel Jeffries a tenté de prédire l’avenir du Bitcoin en 2017 : comment pouvons-nous en tirer des leçons ?

דניאל ג'פריס ניסה לחזות את עתידו של ביטקוין ב-2017: איך אנחנו יכולים ללמוד ממנו

Daniel Jeffries te eseye predi avni Bitcoin a nan 2017: Ki jan nou ka aprann de li

ダニエル・ジェフリーズが2017年にビットコインの未来を予測しようとした：そこから何を学ぶべきか

Danielis Jeffriesas bandė nuspėti Bitcoin ateitį 2017 m.: kaip galime iš to pasimokyti

Daniels Džefrijs mēģināja paredzēt Bitcoin nākotni 2017. gadā: kā mēs varam no tā mācīties

Daniel Jeffries probeerde de toekomst van Bitcoin in 2017 te voorspellen: hoe we ervan kunnen leren

ډینیل جیفریز هڅه وکړه چې په 2017 کې د Bitcoin راتلونکي وړاندوینه وکړي: موږ څنګه له دې څخه زده کولی شو

UDaniel Jeffries uzame ukuqikelela ikamva leBitcoin ngo-2017: Sinokufunda njani kuyo.

丹尼尔·杰弗里斯试图预测 2017 年比特币的未来：我们可以从中学到什么

Chaos in Code: AI Assistants Clash in a Battle for Digital Supremacy

5 Startups Using Funny Marketing to Stand Out 

Smart contracts are talked about quite a lot. What is often ignored, however, is their safety. On one hand, we have self-executing mechanisms that don’t require mediators. On the other, it takes one look at the crypto market to see how unsafe smart contracts can be. Today, we talk about the importance of smart contract audits and the ways they make smart contracts safer. Most Common Issues Smart contracts are the backbone of blockchain. In many cases, chain issues can be traced back to an error within the code. But before you throw stones at the houses of developers, let's imagine a smart contract code. A smart contract determines actions that follow commands initiated by a user or an owner of the contract. If we take Solidity as an example, it’s a fairly simple language easily mastered by developers. Still, it’s not always enough. Every symbol matters in the code, and every typo can bring unpredictable results, from minor malfunctions to the loss of millions of dollars in funds. A more dangerous reason so many projects go up in flames is malicious activity. Every so often, the source of such activity is none other than the project’s owner. Rug pulls have been a plague for the decentralized finance community since the beginning. Unlike a coding error, a rug pull usually indicates premeditation. More often than not, a project owner releases their decentralized app (dApp) with a clear intention to encourage users to invest in it, along with backdoors that make it possible for a privileged user to withdraw all the funds. The community has been learning to detect potential rug pulls. They can be a result of malicious actions from owners, users or even an accident. But let me jump ahead of myself a little to say that audits have become one of the signs of good intentions. The last popular reason for security breaches is hacker attacks. In the first quarter of 2023, $222 million was lost to . These types of exploits attract hackers due to their profitability, and they are becoming increasingly more complex every day. 52 flash loan and oracle manipulation attacks What is a security audit? Security audits of smart contracts exist with the sole purpose of detecting vulnerabilities and errors in a dApp, protocol or blockchain. Since all of the above work on smart contracts, reviewing said contracts is a necessary step in the process of development. An audit helps to detect anything that can serve as an entry point for an attack, whether the attacker is a member of the project’s team or a third party. Naturally, not all security audits are equally efficient. Along with scam projects, scam auditors exist, offering a report or a certificate that doesn’t reflect the real state of affairs. A quality audit contains detailed information about the project itself and the issues that have been discovered, whether they were fixed by the developers or not. The process of an audit includes several important steps, and it’s imperative that not one of them is skipped. An overview of the process helps the auditor understand the scope of work and the intended functionality of a smart contract or a dApp. An automated audit is performed so that the most obvious issues can be detected, and there is a guarantee that a human auditor won’t miss them. Additionally, and to a better effect, unit tests are run. These tests should cover each string of the code, and every string must show good results. A manual audit digs deeper into the code and involves human professionals looking into the issues. More experienced companies tend to perform manual audits in separate teams to avoid the element of human error. The auditor’s task here is not merely technical, as they must make sure that the contract follows the expected business logic since the code itself can be interpreted in different ways. Achieving perfection in auditing is never a guarantee, but truly professional companies aim to detect as many issues—minor or severe—as possible. Truths And Myths About Auditing To get a better sense of the reality behind auditing, let's look at some of the truths and myths of the process. Audits are equally important for users and project owners. Truth: It’s never just one side that wins from conducting an audit of a project. For a project owner, it’s a clear sign that their venture takes the security of its users seriously, and the owners have no intention of scamming people. Users, on the other hand, can get familiar with the project and potential risks they’re facing if they invest in or use the dApp in question. An audit guarantees safety. Myth: Unfortunately, even the most advanced security audits and tests can’t always provide a concrete defense against exploits. Since some of them are tied to third-party protocols, even the most thorough audit wouldn’t help if the protocol is unsafe. Similarly, it’s always up to the developers to either accept or ignore the suggestions provided by auditors. If the company doesn’t change the code, there’s no protection against an attack. Keep in mind that protection against a potential rug pull generally does not exist. Having an audit is critical. Truth: A project that has not been audited, regardless of users’ testimonials, cannot be trusted. Developers have to take their projects seriously enough, and they have to want to deliver the best service they possibly can. One audit is enough. Myth: Every change in the code may affect every process within the protocol. This is why even slight changes require a new audit. Just because a project has been audited upon its launch doesn’t mean it will remain just as secure after an update. Conclusion Smart contract security audits have become an industry standard, and they occupy an important place in the world of blockchain and smart contracts. Regardless of the service, be it a DeFi app or a crypto game, audits are an essential element of development. Overlooking them can be a grave error. Follow me on . Check out my . LinkedIn website Also published . here

Why Are Smart Contract Audits Essential For Blockchain Development

How to Effectively Evaluate Your RAG + LLM Applications

কীভাবে কার্যকরভাবে আপনার RAG + LLM অ্যাপ্লিকেশনগুলিকে মূল্যায়ন করবেন

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Cómo evaluar eficazmente sus solicitudes RAG + LLM

Comment évaluer efficacement vos candidatures RAG + LLM

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In today's data-driven landscape, consolidating information scattered across multiple Excel files is a common challenge. Fortunately, Python provides powerful tools to streamline this process, offering a more efficient way to merge and organize data. In this guide, we'll explore how to leverage Python's capabilities to effortlessly combine multiple Excel files into a cohesive and structured dataset. In the world of data, things get messy when you have multiple Excel files with the same columns. If you're looking to tidy up and merge them all into one file, especially when you need to go through them one by one, you're in the right place. This guide will show you an easy way to make sense of it all and keep your data organized. Python Solution Merge multiple Excel files effortlessly with this code! 🚀 Using and , the script navigates through files in a specified folder, combining them into a neat file. Python pandas os merged_excel.xlsx Just plug in your folder path, run the code, and voila – streamlined data! # import packages
import pandas as pd
import os

# Define a function 'append' to merge Excel files in a specified path
def append(path):
	# Create an empty list to store individual DataFrames    
	frames = []    
	for root, dirs, files in os.walk(path):        
		for file in files:            
				file_with_path = os.path.join(root, file)          
				df = pd.read_excel(file_with_path)      
				frames.append(df)    
	df = pd.concat(frames, axis=0)    
	return df

# path：The folder path where storage all the excel files 
df = append(path)  
df.to_excel("merged_excel.xlsx") In this code snippet, we're using two powerful tools: and (a module for working with the operating system). pandas os The function is the star here. It digs through all the Excel files in a specified folder ('path') and collects them into a , which is like a neat table for our data. append DataFrame Now, for the magic moment: the last two lines! They use our function to merge all the Excel data in the specified folder into one consolidated file called append merged_excel.xlsx. Bonus: Handling Unique Data Situations While we've explored solutions for straightforward data merging, let's navigate a slight detour to address more nuanced scenarios. Picture this: your Excel files carry distinct dates in their names, demanding not just consolidation but a thoughtful integration into a final summary so that you can know the date of data in the final version. Situation 1: Data-Driven Excel Filenames: Crafting a Comprehensive Summary Excel For example, if the file name follows a pattern like "filename_YYYY-MM-DD.xlsx", and you want to extract both the date and the filename, you can adapt the code as follows: import pandas as pd
import os

def append(path):
    frames = []  # Create an empty list to store individual DataFrames
    for root, dirs, files in os.walk(path):
        for file in files:
            file_with_path = os.path.join(root, file)
            
            # Extract filename and date information from the file name
            file_info = os.path.splitext(file)[0].split('_')
            
            # Read each Excel file using pandas
            df = pd.read_excel(file_with_path)
            
            # Add filename and date columns to the DataFrame
            df["filename"] = file_info[0]  # Assuming filename is the first part
            df["date"] = pd.to_datetime(file_info[1])  # Assuming date is the second part
            
            # Append the DataFrame to the list
            frames.append(df)
    
    # Concatenate all DataFrames in the list along the rows
    df = pd.concat(frames, axis=0)
    
    return df Situation 2: Streamlining Data: Merging Multiple Excel Files into One with Distinct Sheets Named After Each File Now, let's pivot to another scenario. Suppose your goal is a consolidated master file, but with a twist – each file contributes to a separate sheet, named after its original file. import pandas as pd
import os

def combine(path):
    with pd.ExcelWriter("merged_excel.xlsx") as writer:
        for root, dirs, files in os.walk(path):
            for file in files:
                filename = os.path.join(root, file)
                df = pd.read_excel(filename)
                # Delete the file name suffix, sometimes it could be xlsv/.xlsx
                df.to_excel(writer, sheet_name=file.strip(
                    '.csv'))  
        return df

How to Merge Multiple Excel Files Using Python

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