Security Bulletin
26 May 2026
Biztonsági szemle
ISC Stormcast For Tuesday, May 26th, 2026 https://isc.sans.edu/podcastdetail/9944, (Tue, May 26th)
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License.
26 May 2026
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Possible ACR Stealer From Page Impersonating Claude, (Tue, May 26th)
Introduction
25 May 2026
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Riasztás állománynevekhez és hash-értékekhez kapcsolódó indikátorokról
Tisztelt Ügyfelünk! A Nemzetbiztonsági Szakszolgálat Nemzeti Kiberbiztonsági Intézet riasztást ad ki több, elsősorban Windows-környezetre utaló állománynévhez és hash-értékhez kapcsolódó indikátorról. Az eddig ismert indikátorok az alábbiak: NAME MD5...
25 May 2026
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Microsoft Access VBA, (Mon, May 25th)
Microsoft Access files (Microsoft Office's Database) can contain VBA code.
25 May 2026
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TeamPCP Supply Chain Campaign: Activity Through 2026-05-24, (Mon, May 25th)
TeamPCP now operates across three package ecosystems in parallel, it reached GitHub's own internal codebase, it trojanized an officially Microsoft-published Python SDK, and it appears to have open-sourced its own framework on GitHub.
25 May 2026
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TeamPCP Supply Chain Campaign: Activity Through 2026-05-24, (Mon, May 25th)
TeamPCP now operates across three package ecosystems in parallel, it reached GitHub's own internal codebase, it trojanized an officially Microsoft-published Python SDK, and it appears to have open-sourced its own framework on GitHub.
25 May 2026
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Visibility with EDR/MDR is still important, 'the basics' are impossible, and the news - Rob Allen - ESW #460
24 May 2026
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Wireshark 4.6.6 Released, (Sun, May 24th)
Wireshark release 4.6.6 fixes 1 vulnerability and 11 bugs.
23 May 2026
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An Example of Stack String in High Level Language, (Sat, May 23rd)
This week, I'm attending the SEC670[ 1] training (âRed Teaming Tools - Developing Windows Implants, Shellcode, Command and Controlâ). From my point of view, this training fits perfectly with FOR610 or FOR710 (malware analysis) because it...
22 May 2026
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Ubiquiti patches three critical vulnerabilities in UniFi OS
The vulnerabilities, identified as CVE-2026-34908, CVE-2026-34909, and CVE-2026-34910, allow for unauthorized system changes, path traversal for accessing underlying system files, and command injection attacks, respectively.
22 May 2026
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Cisco warns of AI inaccuracies in security incident reports
Cisco's research highlights several key issues with AI-generated reports, including inconsistency and standardization challenges due to LLMs using different data for each query and producing slightly different outcomes even with the same data.
22 May 2026
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Organizations knowingly ship vulnerable code amid shrinking exploit windows
New research from Checkmarx reveals that 75% of organizations admit to frequently or sometimes deploying code they are aware is vulnerable.
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