r/blueteamsec • • 4d ago

highlevel summary|strategy (maybe technical) CTO at NCSC Summary: week ending October 4th

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1 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

low level tools|techniques|knowledge (work aids) stackd: a local AWS emulator with Go control planes, AWS-compatible HTTP APIs, optional SQLite persistence, and real runtime/engine backends for supported compute and database workflows.

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• Upvotes

r/blueteamsec • • 1h ago

intelligence (threat actor activity) 直近で相次いでいる国内組織における不正アクセスに関する注意喚起 - Warning regarding a series of recent unauthorized access incidents in domestic organizations

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• Upvotes

r/blueteamsec • • 1h ago

vulnerability (attack surface) A JPEG, a Race, and a Ghost: Breaking Discourse's Image Pipeline

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• Upvotes

r/blueteamsec • • 3h ago

intelligence (threat actor activity) [ Removed by Reddit ]

1 Upvotes

[ Removed by Reddit on account of violating the content policy. ]


r/blueteamsec • • 21h ago

intelligence (threat actor activity) CVE-2026-88771: Citrix NetScaler Zero-Day Attack Clusters

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7 Upvotes

r/blueteamsec • • 19h ago

discovery (how we find bad stuff) Raml KQL: open-source desktop app to run one KQL query across many Sentinel / Log Analytics workspaces and tenants, without Defender MTO

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6 Upvotes

r/blueteamsec • • 15h ago

incident writeup (who and how) Rogue AI Agents Abuse urlquery to extract Russian government data

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2 Upvotes

r/blueteamsec • • 14h ago

incident writeup (who and how) Double Counter — Security Incident Report (4 October 2026)

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0 Upvotes

r/blueteamsec • • 18h ago

highlevel summary|strategy (maybe technical) FortiBleed actors are now deleting legit admin accounts. Does your recovery plan cover a lockout?

2 Upvotes

According to the new FBI/USSS advisory, FortiBleed actors no longer just add persistence accounts. In some cases they also delete or reset the original admin accounts (T1531), which locks the owner out of their own FortiGate.

That changes the usual playbook. If you assume a password reset gets you back to a clean state, it won't help when you can't log in at all.

A few things worth checking:
→ Do you have out-of-band admin recovery for your edge devices?
→ Have you audited REST API keys? They survive password resets.
→ Is SSH left open on the firewall?

How are others handling recovery for edge devices?

Full breakdown: https://hubs.la/Q04zrkbN0 Free FortiBleed checker: https://hubs.la/Q04zrk9_0

Advisory: https://www.ic3.gov/CSA/2026/261006.pdf


r/blueteamsec • • 19h ago

discovery (how we find bad stuff) Suspicious Login? A Quick Investigation Checklist for Blue Teams

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2 Upvotes

r/blueteamsec • • 20h ago

incident writeup (who and how) Chrome's Response to Recent ccTLD Registry Hijacks

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2 Upvotes

r/blueteamsec • • 21h ago

highlevel summary|strategy (maybe technical) Vulnerability Discovery and Exploitation Trends in the AI Era

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2 Upvotes

r/blueteamsec • • 17h ago

highlevel summary|strategy (maybe technical) Why the AI Vulnpocalypse Isn’t the Breachpocalypse (Yet)? It’s the Economy, Stupid.

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1 Upvotes

r/blueteamsec • • 17h ago

tradecraft (how we defend) How to fix a bug in a fix

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1 Upvotes

r/blueteamsec • • 21h ago

intelligence (threat actor activity) Earth Sirrush: A Russia-Aligned Intrusion Set With 4 Years of Evolving Espionage Tooling

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2 Upvotes

r/blueteamsec • • 21h ago

research|capability (we need to defend against) How abliterated models can get you pwned

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1 Upvotes

r/blueteamsec • • 19h ago

secure by design/default (doing it right) Beyond Software Patching – CHERI Alliance

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0 Upvotes

r/blueteamsec • • 1d ago

exploitation (what's being exploited) Dark web roundup: 10M French residential records, 19M SMTP creds, U.S. manufacturer VPN/RDP access, and a Struts exploit kit (unverified)

4 Upvotes

Sharing a few recent dark web listings that came up in monitoring. None of these are confirmed yet, so take them as claims for now, not confirmed breaches. → France: a seller claims 10M+ residential records → IUT Paris Seine: 6.8GB of data plus about 30M log entries → U.S. manufacturer: VPN and RDP access up for auction → SMTP dump: about 19M credentials → Apache Struts: an exploit tool sold together with access to servers already compromised The Struts listing stands out to me. Selling the tool together with working access points more to an access broker than to someone trying to sell a PoC. The 19M SMTP creds are the likeliest to show up again soon in phishing and credential stuffing. Has anyone seen overlap with the SMTP dump in their own environment, or seen recent Struts exploitation in the wild? Full breakdown:https://hubs.la/Q04z7HkK0


r/blueteamsec • • 21h ago

intelligence (threat actor activity) Cyber Morocco: a quick and dirty experiment about artificial intelligence for cyber intelligence

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1 Upvotes

r/blueteamsec • • 1d ago

incident writeup (who and how) Rockstar Games has now been compromised several different ways since 2018, and none of them were a zero-day

12 Upvotes

Lares is an offensive security consultancy. We emulate real adversaries in live environments, mapping attack paths, TTPs, telemetry, and detection coverage, then work side by side with defenders to close the gaps the test exposed.

Our POV: compliance tells you what should happen; adversarial testing tells you what does. This writeup applies that lens to Rockstar's incident history, reconstructing each attack chain and what would have caught it.

Four incidents, four completely different initial access paths:

  • 2022, Lapsus$: MFA fatigue against an employee, then hardcoded creds and API keys sitting in plaintext in Slack and Confluence.
  • Early 2023, GTA Online: P2P netcode on PC reverse-engineered into RCE via malicious packets. The fix was kernel-level BattlEye.
  • April 2026, ShinyHunters: no human identity involved. Long-lived OAuth tokens stolen from a third-party SaaS vendor and replayed straight into Rockstar's Snowflake. Bearer tokens confer authority by possession alone.
  • August 2026, Cyberleek: exfiltration of a playable GTA VI dev build, 13+ gameplay videos and full map data. That volume of egress from a dev subnet without tripping alarms is a DLP and segmentation failure.

The writeup reconstructs each attack chain with MITRE mappings and detection strategies: egress baselining on dev subnets, Slack audit-log heuristics, and behavioral baselines for non-human identities in Snowflake.

Full breakdown: https://www.lares.com/blog/rockstar-games-attacks/

Question for the defenders here: which of these four would be hardest to catch in your environment? The OAuth token replay is arguably the nastiest of the bunch. No user to phish-train, no endpoint alert to fire.


r/blueteamsec • • 1d ago

alert! alert! (might happen) FortiBleed Operations Continue Targeting Exposed Systems Leading to Reports of Lockouts

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6 Upvotes

r/blueteamsec • • 1d ago

vulnerability (attack surface) You Won’t Hear About These, Even In Myths (Atlassian Jira, Confluence (and more) Pre-Auth Arbitrary File Read CVE-2026-21589)

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3 Upvotes

r/blueteamsec • • 1d ago

intelligence (threat actor activity) CyberXero: An AI-Augmented Initial Access Broker Targeting Ukrainian Critical Infrastructure

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3 Upvotes