Key Findings The Gentlemen ransomware operation has developed GentleKiller, a standardized EDR-killer suite distributed to affiliates before ransomware deployment GentleKiller exists in at least eight variants, each impersonating legitimate products and exploiting different vulnerable drivers via BYOVD technique The framework targets over 400 processes across 48 security products including CrowdStrike, SentinelOne, and Microsoft Defender The Gentlemen adopts newly disclosed e