Favicon Trojan: Hiding JavaScript Skimmers Inside Images with Steganography
Educational Purpose Only. This article and Lab 4 are strictly for educational purposes. Code examples demonstrate attack techniques to help security professionals understand and defend against them. Never use these techniques on systems you do not own. When Security Tools Stop Looking Every serious JavaScript security control — Content Security Policy, Subresource Integrity, script-src allow-lists, WAF rules — is built around the same assumption: the payload is in a script. ...