Security researchers at Microsoft have identified a campaign named "TerminalFix" that exploits compromised websites to trick users into installing a backdoor. Users visiting these sites encounter a deceptive overlay prompting them to complete a fake Cloudflare CAPTCHA, which requires executing a malicious PowerShell command. This leads victims to inadvertently sideload dynamic link libraries (DLLs) and deploy a Python implant that creates encrypted reverse tunnels, allowing attackers to access internal networks.