Breach404
Back to Insights
Cybersecurity2 min readApril 16, 2026

'Harmless' Global Adware Transforms Into an AV Killer

Dragon Boss, a piece of software that appeared harmless, was updated in March 2025 to secretly disable Windows Defender protections and establish persistent access to infected systems. Business leaders and security teams should immediately audit any syste

Could your website be vulnerable to attacks like this?

Run a free 10-point security scan on your site — headers, SSL, DNS, and more. Results in 15 seconds.

Test Your Site Now — It's Free