The navigator.deviceMemory attribute is part of the Device Memory API. It exposes an approximate amount of system RAM to help websites adjust resource usage for low-end devices. But like many hardware-related attributes, it also contributes to the browser fingerprint, and its value can be misrepresented or tampered with in| The Castle blog
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
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
Bots are often used to conduct attacks at scale. They can be used to automatically test stolen credit cards, steal user accounts (account takeover), and create thousands of fake accounts. Detecting bot activity has traditionally relied on techniques like Web Application Firewalls (WAFs), CAPTCHAs, and static fingerprinting. However, with the| The Castle blog
This is the third article in our series on anti-detect browsers. In our previous article, we analyzed Undetectable, a widely used anti-detect browser. In this article, we present two effective methods for detecting scripts—especially anti-fingerprinting scripts—that have been injected through the Chrome DevTools Protocol (CDP) in Chrome and| The Castle blog
This is the second article of our series about anti-detect browsers. In the first article, we gave an overview of anti-detect browsers, their main features and what they’re used for. In this second article, we do a deep dive into Undetectable, a popular anti-detect browser. We start by providing| The Castle blog
