Systems Security Researcher & Kernel Engineer.https://sreeharipj.github.io/https://sreeharipj.github.io/posts/kernel-level-ransomware-killswitch/https://sreeharipj.github.io/posts/kernel-level-ransomware-killswitch/Building a high-performance ransomware detector by tracing kernel file operations with eBPF and dropping processes before encryption happens.Wed, 15 Oct 2025 10:00:00 GMThttps://sreeharipj.github.io/posts/150gb-data-leak-bucket/https://sreeharipj.github.io/posts/150gb-data-leak-bucket/A story of idle curiosity, a CloudFront XML page, and an unauthenticated S3 bucket exposing 150GB of user data from knot.dating.Fri, 22 Aug 2025 09:30:00 GMThttps://sreeharipj.github.io/posts/dns-dangling-pointers/https://sreeharipj.github.io/posts/dns-dangling-pointers/Subdomain enumeration, a forgotten sports fest, and a dangling DNS that somehow survived yearsSat, 10 May 2025 14:45:00 GMT