📰 DAILY THREAT BRIEFING
Tuesday, May 26, 2026
12 News Items
THN · BleepingComputer · Krebs · Dark Reading · SANS

📰 Cybersecurity News Headlines

Top stories from leading cybersecurity publications as of May 26, 2026.

  1. Possible ACR Stealer From Page Impersonating Claude, (Tue, May 26th)
    — SANS ISC

    Introduction
  2. Anthropic’s restricted Claude Mythos model may be coming to Claude Code
    — Bleeping Computer

    Anthropic appears to be preparing for the public rollout of the Mythos model, which was announced in April as a restricted model that poses …
  3. Microsoft Access VBA, (Mon, May 25th)
    — SANS ISC

    Microsoft Access files (Microsoft Office's Database) can contain VBA code.
  4. ⚡ Weekly Recap: Linux Flaws, Defender 0-Days, Router Botnets, and Supply Chain Chaos
    — The Hacker News

    Monday recap. Same mess, new week. A sketchy dev tool got people pwned, old bugs came back from the dead, and security products somehow need…
  5. TeamPCP Supply Chain Campaign: Activity Through 2026-05-24, (Mon, May 25th)
    — SANS ISC

    TeamPCP now operates across three package ecosystems in parallel, it reached GitHub's own internal codebase, it trojanize…
  6. TeamPCP Supply Chain Campaign: Activity Through 2026-05-24, (Mon, May 25th)
    — SANS ISC

    TeamPCP now operates across three package ecosystems in parallel, it reached GitHub's own internal codebase, it trojanize…
  7. Netherlands Seizes 800 Servers, Arrests 2 for Aiding Cyberattacks
    — Krebs on Security

    Authorities in the Netherlands have arrested the co-owners of two related Internet hosting companies for operating IT infrastructure used by…
  8. FBI warns of Kali365 phishing service targeting Microsoft 365 accounts
    — Bleeping Computer

    The FBI is warning about the Kali365 phishing-as-a-service platform (PhaaS) that is used to hijack Microsoft 365 accounts by abusing OAuth d…
  9. Ghost CMS CVE-2026-26980 Exploited to Hijack 700+ Sites for ClickFix Attacks
    — The Hacker News

    Threat actors are exploiting a recently disclosed critical security flaw in Ghost CMS to inject malicious JavaScript code with an aim to fue…
  10. The Alert Firehose Finally Meets Its Match
    — The Hacker News

    Ask a cybersecurity pro about Network Detection and Response (NDR) and you might still hear "Noisy," "Too much data." But ask the teams runn…
  11. Lazarus Deploys RemotePE Memory-Only RAT Against Financial and Crypto Firms
    — The Hacker News

    Cybersecurity researchers have shed light on a cross-platform malware called RemotePE that has been put to use by the North Korea-linked Laz…
  12. Ghost CMS SQL injection flaw exploited in large-scale ClickFix campaign
    — Bleeping Computer

    A large-scale campaign is exploiting a critical SQL injection vulnerability (CVE-2026-26980) in Ghost CMS to inject malicious JavaScript cod…

Generated by HiveNet.ai Threat Intelligence Platform · May 26, 2026 · Sources: The Hacker News, Bleeping Computer, Krebs on Security, Dark Reading, SANS ISC