By Dancho Danchev
For years, thanks to the currently mature human-driven ecosystem offering CAPTCHA-solving as a service, cybercriminals have been persistently and automatically abusing major Web properties by undermining the “chain of trust” that these properties rely on so extensively.
Still living in a world supposedly dominated by malware-infected bots, this myopia has resulted in the rise of these managed services, rendering any recent CAPTCHA “innovations” useless since they continue relying on humans – the very species that CAPTCHA is supposed to be recognizable by in the first place.
Just how easy is it to automatically register tens of thousands of bogus accounts at, let’s say, YouTube? In this post I’ll profile a recently released tool that’s relying on API keys offered by a CAPTCHA-solving services, automating the account registration process in combination with the use of malware-infected hosts as proxies.