Cybersecurity briefing — May 28, 2026.

Google Cloud unveiled an automated platform that fuses Gemini models, Mandiant tradecraft, Wiz exposure data, and the CodeMender fixing agent to find, prioritize, and remediate vulnerabilities at machine speed. The move targets shrinking exploit windows as attackers increasingly use AI to discover and weaponize flaws in hours or days. Security teams should prepare for faster patch cycles, AI-assisted triage, and tighter governance over model access to enterprise code and systems.

Source: SecurityWeek

Silent Ransom Group (aka Luna Moth/Chatty Spider) is social-engineering firms by phone and email, then sending operatives to offices posing as IT to obtain access, plant USB devices, or solicit remote sessions. The FBI urges strict identity verification for anyone seeking privileged access, no unescorted “IT” visitors, and out‑of‑band confirmation before enabling remote support. Firms should harden MFA, monitor for anomalous RDP, and train staff to challenge unexpected requests.

Source: SecurityWeek

CrowdStrike, Google, and Shadowserver simultaneously disrupted all four C2 channels used by GlassWorm, a campaign that seeded malicious packages, repos, and VS Code extensions to compromise developers. The takedown highlights the fragility of developer ecosystems and the need for signed packages, pinned dependencies, SBOMs, and rapid credential rotation if tooling is suspected. Organizations should review build pipelines for tampering and audit access tokens used by CI/CD.

Source: SecurityWeek

Attackers are combining SEO poisoning with AI chatbot interactions to recommend “download” links that install miners and backdoors instead of legitimate tools like CrystalDiskInfo, HWMonitor, DDU, FurMark, K‑Lite, and PDFgear. Malicious content is promoted through fake repositories and compromised YouTube channels, amassing tens of thousands of views. Defenders should enforce allowlisting and verified vendor URLs, block-lists for known-malicious domains, and EDR detections for miner behaviors.

Source: Help Net Security

Microsoft fixed a high-severity SharePoint flaw (CVSS 8.8) that can allow remote code execution with low complexity, making it an attractive enterprise target. Given SharePoint’s prevalence and historical exploitation patterns, prioritize patching, restrict external exposure where possible, and monitor for suspicious process creation from SharePoint worker processes. Apply the latest cumulative updates and validate that web servers and farm services are fully updated.

Source: Security Affairs

Forensic evidence links the LA Metro breach—initially claimed by a hacktivist persona—to infrastructure tied to Iranian government threat actors. The operation underscores the growing use of false-flag narratives to obscure state involvement and complicate incident response. Transit and public-sector operators should expect geopolitically motivated intrusions and ensure robust segmentation, immutable backups, and continuous monitoring across OT/IT boundaries.

Source: SecurityWeek

Cisco’s AI threat intelligence team reports that industry safety benchmarks miss how real attackers operate—iterating across multiple turns, reframing prompts, and building context to bypass guardrails. The gap between single-turn benchmark scores and real-world resilience is large enough to misrank leading models. Security teams integrating LLMs should conduct multi-turn red-teaming, enforce policy and tool-use guardrails, and log/inspect agent actions over entire sessions.

Source: Help Net Security

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