A massive attack surface involving outdated Microsoft Internet Information Services (IIS) servers. During Shadowserver’s daily network scans on March 23, 2026, researchers identified over 511,000 End-of-Life (EOL) IIS instances actively connected to the internet. This widespread exposure presents a serious security risk for organizations worldwide, as these obsolete servers no longer receive standard security patches. […] The post 511,000+ End-of-Life Microsoft IIS Instances Exposed Online, Secure Now! appeared first on Cyber Security News.