Does your IIS website have BadIIS? How to detect and remove the SEO-poisoning module attackers use to redirect visitors to scams
Does your IIS website have BadIIS ? How to detect, remove, and defend against the SEO-poisoning IIS module By CyberDudeBivash • September 2025 • Long-form guide (defender playbook) Affiliate resources embedded for defender tools & training. Disclosure: This post contains affiliate links. If you purchase via the links, CyberDudeBivash may earn a commission at no extra cost to you. We only recommend tools and training we use and trust for defending IIS and web infrastructure. Defender Starter Kit — Recommended Resources EDUREKA — Web App Security, DFIR & Threat Hunting Courses AliExpress WW — Secure storage, hardware pouches, USB security keys Alibaba WW — Enterprise WAF appliances & network monitoring kits Kaspersky — Endpoint & server protection with web server modules BadIIS is the shorthand defenders use for a class of malicious IIS modules that attackers install to hijack legitimate web...