r/blueteamsec • • 2d ago

highlevel summary|strategy (maybe technical) CTO at NCSC Summary: week ending October 18th

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2 Upvotes

r/blueteamsec • • Mar 09 '26

highlevel summary|strategy (maybe technical) Daily BlueTeamSec Briefing Archive - daily AI generated podcast of the last 24hours of posts

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2 Upvotes

r/blueteamsec • • 1h ago

incident writeup (who and how) How I got over 300 Tor exit nodes removed

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• Upvotes

Author here :)

TLDR: on Oct 2, 333 exits (~10% of Tor exits) started redirecting port 22 to 12 interception servers running a paramiko-based MITM that stole passwords and tried to drop Ebury on the target.


r/blueteamsec • • 3h ago

highlevel summary|strategy (maybe technical) “'Password1’ is not an appropriate password”: Two Welsh organisations reprimanded after cyber-attack exposed children’s information

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4 Upvotes

r/blueteamsec • • 6h ago

incident writeup (who and how) Glassworm Hacks OVH Clouds CLI tool

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2 Upvotes

r/blueteamsec • • 3h ago

intelligence (threat actor activity) From Win+X to EdgeUpdate - Unpacking a jsDelivr Hosted ClickFix Loader

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2 Upvotes

r/blueteamsec • • 6h ago

intelligence (threat actor activity) AnyDesk and ScreenConnect campaign targeting banking customers

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3 Upvotes

r/blueteamsec • • 1h ago

highlevel summary|strategy (maybe technical) ATT&CK v20: Critical Infrastructure Campaigns, Adversary Use and Abuse of AI, & Iranian Cyber Espionage

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• Upvotes

r/blueteamsec • • 19h ago

incident writeup (who and how) Criminals Impersonate US Traceback Group to Hack Telcos Worldwide

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11 Upvotes

r/blueteamsec • • 11h ago

incident writeup (who and how) Release assets of v0.13.0–v0.15.0 replaced on 2026-10-19 with a dirty build of a later commit · Issue #300 · ovh/ovhcloud-cli - compromised release

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1 Upvotes

r/blueteamsec • • 11h ago

intelligence (threat actor activity) A China-Linked Operator Used AI Agents to Attack Governments Across Asia

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0 Upvotes

r/blueteamsec • • 21h ago

intelligence (threat actor activity) Hunting APT28: How We Caught Covenant Grunt Hiding in Office Documents

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7 Upvotes

r/blueteamsec • • 20h ago

exploitation (what's being exploited) Plex vulnerabilities being exploited in the wild to drop a cryptominer

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3 Upvotes

r/blueteamsec • • 22h ago

intelligence (threat actor activity) Inside Cairn: Open Windows into massive AI-Driven Cyber Operations

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4 Upvotes

r/blueteamsec • • 21h ago

intelligence (threat actor activity) Targeting Democracy: Pegasus and Mercenary Spyware Attacks on Serbian Pro-Democracy Figures - The Citizen Lab

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3 Upvotes

r/blueteamsec • • 1d ago

tradecraft (how we defend) malscore - a scorer that rates Linux commands/sessions 0–100 with MITRE ATT&CK mapping

15 Upvotes

Sharing a small tool I built for triaging Linux command telemetry.

malscore scores a command or a whole shell session (history/auditd/EDR feed) from 0–100 with a verdict band and the ATT&CK techniques behind it. It's static and never executes the input; ~113 named signals fire and combine via noisy-OR, so every point traces to a reason. Session mode adds cross-command detections (stage→exfil, download-then-run, escalation→cred access, log/history clearing).

pip install malscore

GitHub: https://github.com/raj3shp/malscore · zero deps. Feedback welcome.


r/blueteamsec • • 1d ago

intelligence (threat actor activity) Free real-time certificate transparency stream (domain names, no API key)

6 Upvotes

For phishing and lookalike-domain monitoring: wss://api.certstream.dev/ streams domain names of newly issued certificates. Python example on certstream.dev/free-certstream-api.html. Open source, you can self-host.


r/blueteamsec • • 22h ago

highlevel summary|strategy (maybe technical) Cyber incidents in Japan Publicly reported cybersecurity incidents affecting Japanese organizations, collected from news, security publications, and official notices.

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2 Upvotes

r/blueteamsec • • 23h ago

exploitation (what's being exploited) CVE-2026-108097 Deep Dive: Turning a Drupal Field UI Callback Into RCE

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1 Upvotes

r/blueteamsec • • 1d ago

vulnerability (attack surface) Big Fish: Exploiting a 37-Year-Old Kernel Bug in OpenBSD

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2 Upvotes

r/blueteamsec • • 1d ago

tradecraft (how we defend) Deception and Detection: Why AI Empowers Cyber Defense over Offense

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1 Upvotes

r/blueteamsec • • 1d ago

vulnerability (attack surface) By Default, Insecure: Apache Airflow Disables SSH Host Key Verification

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2 Upvotes

r/blueteamsec • • 1d ago

malware analysis (like butterfly collections) New WebSockets Backdoor Likely Targeting Iraq - suspected Iranian

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2 Upvotes

r/blueteamsec • • 1d ago

intelligence (threat actor activity) GhostAction Copycats PolinRider by Hiding a Stealer in a Fake Font File

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2 Upvotes

r/blueteamsec • • 1d ago

intelligence (threat actor activity) 2026-10-15: PREY-0059 Uses Victim-Branded S3 Lures to Deploy Java RAT C2 in Under Five Minutes

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2 Upvotes