High Volume of IIS Server Errors

Ankit Mehta@Secvyn

•updated Jun 13, 2026•0•0•1

This rule identifies a high volume of HTTP 5xx errors (server-side errors) within a 5-minute interval from IIS logs. A count of 10 or more errors within this timeframe could indicate a web server under attack, a denial-of-service condition, or a critical application failure.