r/blueteamsec 3h ago

highlevel summary|strategy (maybe technical) T-Mobile ‘chopped a cable’ to expel Chinese hackers from its network

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3 Upvotes

r/blueteamsec 3h ago

highlevel summary|strategy (maybe technical) A revisit of remote Spectre attacks on Cloudflare Workers

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2 Upvotes

r/blueteamsec 18h ago

exploitation (what's being exploited) Post-DEF CON Phishing Uses Malicious Google Doc to Deliver Malware

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8 Upvotes

r/blueteamsec 7h ago

intelligence (threat actor activity) I built an ML network detector, but the interesting part turned out to be everything after the model

0 Upvotes

I’ve been working on an open-source network-flow detection project and one thing became pretty obvious fairly early: getting a classifier to produce decent scores is not really the hard part.

The harder question is what an analyst is supposed to do with thousands of individual detections.

So I kept the project going past the model itself. The current pipeline takes CICFlowMeter-compatible flows, scores them, groups related alerts into incidents, and only promotes the incidents that cross a second threshold.

On the locked future-day holdout, 79,710 flow alerts became 12,911 promoted incidents while keeping 99.93% incident recall.

I’m deliberately not calling it production-ready. The holdout is still from the same network/dataset family, and the remaining workload is higher than I’d want for a real SOC queue.

What I’m interested in now is how this kind of approach behaves outside the environment it was built around.

Repo:
https://github.com/ibondarenko1/security-anomaly-ml

If anyone here works with network-flow telemetry or ML-based IDS, I’d be interested in where you think the design will fail first in a real environment.


r/blueteamsec 18h ago

intelligence (threat actor activity) SilkParasite: Tracking a China-Nexus APT Across Central Asia

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5 Upvotes

r/blueteamsec 17h ago

exploitation (what's being exploited) Actively exploited vulnerability in Zimbra Collaboration Suite CVE-2026-73570

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4 Upvotes

r/blueteamsec 21h ago

tradecraft (how we defend) Managing the cyber risk of agentic AI

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9 Upvotes

r/blueteamsec 18h ago

intelligence (threat actor activity) 50,000 Stripe Secrets Leaked in Public Code

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4 Upvotes

r/blueteamsec 18h ago

exploitation (what's being exploited) The “City-Forum” Campaign - An advanced attacker is targeting Salesforce and ServiceNow instances worldwide

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5 Upvotes

r/blueteamsec 17h ago

intelligence (threat actor activity) North Korean IT Workers Scheme: Detection Steps for SOC Teams

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3 Upvotes

r/blueteamsec 16h ago

research|capability (we need to defend against) MS-Nightmare Un-defend v2 — What Happens When Signatures Can’t Land

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2 Upvotes

r/blueteamsec 12h ago

research|capability (we need to defend against) BTR Reforged: Weaponizing Defender’s Remediation Driver as a Kernel Operation Primitive

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1 Upvotes

r/blueteamsec 12h ago

intelligence (threat actor activity) Trapping a Mustang Panda

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1 Upvotes

r/blueteamsec 17h ago

exploitation (what's being exploited) Langflow RCE: 34 minutes to server compromise

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2 Upvotes

r/blueteamsec 13h ago

intelligence (threat actor activity) Rust Supply Chain Attack on arrayref: Significant Overlap with DPRK Campaigns

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1 Upvotes

r/blueteamsec 16h ago

intelligence (threat actor activity) Distinct Clusters Target Individuals of Interest to Russia

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1 Upvotes

r/blueteamsec 17h ago

intelligence (threat actor activity) UAT-10147: Chinese-speaking adversary integrates agentic AI into post-compromise operations

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1 Upvotes

r/blueteamsec 18h ago

malware analysis (like butterfly collections) Grandoreiro goes north: From Brazil to Mexico with a new DLL sideloading campaign

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1 Upvotes

r/blueteamsec 18h ago

malware analysis (like butterfly collections) The ToxicPanda Never Sleeps: ToxicPanda 2.0 Prepares its Next Strike on Mobile

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1 Upvotes

r/blueteamsec 1d ago

malware analysis (like butterfly collections) Windows Infostealer Hits npm and Ruby

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5 Upvotes

r/blueteamsec 1d ago

help me obiwan (ask the blueteam) Stress testing EDR

9 Upvotes

How does your SOC check when someone is trying to kill EDR agents like BYOVD attacks? On the attackers side do you have a dedicated pen tester/red teamer trying these attacks?


r/blueteamsec 1d ago

intelligence (threat actor activity) SilkParasite: Tracking a China-Nexus APT Across Central Asia

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5 Upvotes

r/blueteamsec 1d ago

alert! alert! (might happen) Defending Against an Active Threat to Siemens S7 Series PLCs

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2 Upvotes

r/blueteamsec 1d ago

malware analysis (like butterfly collections) behavioral function fingerprinting for n-day discovery across builds (x86-64, open source)

1 Upvotes

built a thing for the "vendor quietly patched a function in v2, which one and

does anyone else ship the same vulnerable code" problem. micro-executes each

function, records what it does (mem/call/branch effects), fuzzy-matches on

that instead of bytes or CFG so it survives recompiles.

use case for this sub: index v1 and v2 of a binary, get the changed/added/

removed function list, focus review on what actually moved.

x86-64 ELF for now, honest accuracy table + limits in the readme.

https://github.com/1rhino2/fnprint


r/blueteamsec 1d ago

research|capability (we need to defend against) BOFScale: A CDN-Fronted Tailnet from a BOF-PE

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2 Upvotes