r/blueteamsec is a subreddit with 74k members. The most common kinds of discussions are solution requests and pain & anger, and the community frequently discusses shellcode.
We focus on technical intelligence, research and engineering to help operational [blue|purple] teams defend their estates and have awareness of the world.
Our primary home is on Lemmy after the great ban debacle of 2025.
Popular Themes in r/blueteamsec
#1
Solution Requests
: "SIEM SOLUTION"
2 posts
#2
Pain & Anger
: "APT-C-36组织使用新型RAT开展攻击活动 - The APT-C-36 group is using a new type of RAT (Real Attack Tag) to carry out attacks."
1 post
#3
Self-Promotion
: "Trying to get my automated cybersecurity software for Linux to those who really need it"
1 post
Popular Topics in r/blueteamsec
#1
Shellcode
1 post
Flair Used in r/blueteamsec
#1
intelligence (threat actor activity)
: "CyberStrikeAI attacks educational institutions"
22 posts
#2
vulnerability (attack surface)
: "CVE-2026-112445: CVE-2026-112445: The Simplest macOS Local Privilege Escalation to Date"
13 posts
#3
highlevel summary|strategy (maybe technical)
: "New Volatility 3 Plugin: MCPTrace - Carving Model Context Protocol (MCP) Artifacts from Memory Dumps"
13 posts
#4
incident writeup (who and how)
: "Official Claude Code Extension Compromise: Security Advisory"
10 posts
#5
tradecraft (how we defend)
: "Logstotal : Self-hosted multi-engine Sigma detection for event logs (like VT but for logs)"
9 posts
#6
research|capability (we need to defend against)
: "Using PDFs and Websockets for Creative Credential Harvesting"
8 posts
#7
low level tools|techniques|knowledge (work aids)
: "MANTIS: Multi-Sources Analysis & Threat Intelligence Search"
7 posts
#8
malware analysis (like butterfly collections)
: "Trojanized Claude Code Extension Plants an SSH Backdoor"
5 posts
#9
discovery (how we find bad stuff)
: "[2610.39807] InferD: A Honeypot Framework for AI Inference Infrastructure"
4 posts
#10
exploitation (what's being exploited)
: "Synology urges users to update DSM following ransomware attacks on outdated DSM versions| Synology Inc."
2 posts
Member Growth in r/blueteamsec
Yearly
+15k members(25.0%)
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About
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Last updated: November 3, 2026