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Security News — 21 August 2026

A daily, automatically-compiled digest of the cyber security stories that broke in the last 24 hours, drawn from 10 trusted feeds. Each entry is a short excerpt — follow the link to read the full article at its original publisher. Compiled 21 August 2026 · 24 items.

Government & Critical Vulnerability Advisories

CISA Cybersecurity Advisories20 Aug

Johnson Controls Simplex Incident Manager

View CSAF Summary Successful exploitation of this vulnerability could allow a local attacker with low privileges to extract user credentials (passwords and authentication tokens) from system memory, potentially leading to unauthorized acce…

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Primary Threat Research & Vendor Intelligence

Cisco Talos20 Aug

Is Cyber missing the Marque?

In this week's newsletter, new author Mick Baccio introduces himself and explores the operational and security implications of the new White House memorandum regarding private sector participation in government-authorized offensive cyber o…

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Independent Investigative Journalism & Breaking News

Blue Team, Incident Response & Detection Engineering

Security Executive, Architecture & Policy

Daniel Miessler20 Aug

I Only Do Anything Once

A figure carrying a crate around a deep circular rut worn by dozens of layered footprints, with an angular slot at the rut's edge and one clean line departing from it/images/i-only-do-anything-once.webp/images/i-only-do-anything-once.webp…

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