Cyber Security News for August 20 2026 - Daily DefSec Brief
1. Feds warn of active AI-scripted attacks on internet-exposed Siemens S7 PLCs — CISA — https://www.cisa.gov/news-events/cybersecurity-advisories/aa26-231a 2. Critical Citrix NetScaler auth-bypass patched, exploitation expected — CVE-2026-19490, CVE-2026-19489 — SecurityWeek — https://www.securityweek.com/exploitation-expected-for-critical-authentication-bypass-patched-in-citrix-netscaler/ 3. UAT-10147 deploys cross-platform SPECTRE implant with Linux rootkit and BYOVD — CVE-2019-16098, CVE-2021-21551 — Cisco Talos —…
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