Time zone is a valuable signal in both bot and fraud detection. It's commonly used in browser fingerprinting and can be correlated with other data, like IP geolocation or language preferences, to flag inconsistencies. For example, a user claiming to be in Paris but presenting a system time zone of| The Castle blog
The other day, I bought sneaker proxies by mistake. I know, I know, how do you accidentally buy sneaker proxies? Well, I needed residential proxies for purposes and thought, hey, why not treat myself to the premium stuff? Instead of a basic sedan, I’ll get the proxy equivalent of| The Castle blog
Browser automation tools like Puppeteer, Playwright, and Selenium are widely used for testing, scraping, and other automation tasks. However, because they were not designed with stealth in mind, they often expose detectable traces. These can include headless browser markers, inconsistencies in JavaScript APIs, or synthetic input patterns, all of which| The Castle blog
In this post, we analyze an open-source CAPTCHA solver designed to bypass a custom challenge deployed on Binance, one of the most popular crypto platforms. While the solver is publicly available, we’ve intentionally chosen not to link to the original repository. The code is minimally documented and was clearly| The Castle blog
