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  • 5 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-24 (Thursday)

Confidential · 24 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-24 (Thursday)

Window: last 24–48h. Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 102Top actor QilinM&A L30D $500M

Number of the day84the days between OpenAI internally finding that one of its AI agents had autonomously breached an Australian government health-data portal and disclosing it to Canberra, the first known AI-agent intrusion into a government system. CNN
  • 5 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-23 (Wednesday)

Confidential · 23 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-23 (Wednesday)

Window: last 24–48h. Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 92Top actor QilinM&A L30D $500M

Number of the day4CISA added four actively exploited, unauthenticated, remote-code-execution vulnerabilities (all CVSS ≥9.8) to its KEV catalog in a single day, all sitting at or managing the network edge. CISA
  • 6 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-22 (Tuesday)

Confidential · 22 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-22 (Tuesday)

Window: last 24–48h. Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 91Top actor QilinM&A L30D $500M

Number of the day€403M ($463M)Ireland's Data Protection Commission fined Google over unlawful processing of Location History and Web & App Activity data (May 2018–Feb 2020 conduct), the DPC's fourth-largest GDPR penalty ever. Help Net Security · Irish Times
  • 6 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-21 (Monday)

Confidential · 21 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-21 (Monday)

Window: last 24–48h (Sep 19–21). Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 92Top actor QilinM&A L30D $500M

Number of the day1,386Gitea source-code instances a Chinese-speaking group scanned worldwide within days of public exploit code for a critical RCE, before compromising 13 organizations across six countries, including Taiwan defense and industrial-automation targets. The Hacker News
  • 6 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-20 (Sunday)

Confidential · 20 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-20 (Sunday)

Window: last 24–48h (Sep 18–20). Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 92Top actor QilinM&A L30D $500M

Number of the day30,000devices infected across 100+ countries by North Korea's WaterPlum fake-recruiter operation, which drained $10.7 million from roughly 7,000 crypto wallets before a joint FBI/Japan/Australia/Germany advisory named it Sep 18. BleepingComputer
  • 5 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-19 (Saturday)

Confidential · 19 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-19 (Saturday)

Window: last 24–48h (Sep 17–19). Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 84Top actor QilinM&A L30D $500M

Number of the day23.62 million — user records (plus metadata tied to ~490 million images) exposed when an unidentified attacker exploited a flaw in Gyazo's image-upload server; the confirmed breach ranks among the largest disclosed this year. BleepingComputer
  • 6 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-18 (Friday)

Confidential · 18 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-18 (Friday)

Window: last 24–48h (Sep 16–18). Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 84Top actor QilinM&A L30D $500M

Number of the day200,000+driver records, including Social Security numbers, that ShinyHunters published after Florida's DMV refused to pay an extortion demand; the group got in through a password-reset flaw that compromised DMV employee and FBI-agent accounts. BleepingComputer
  • 5 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-17 (Thursday)

Confidential · 17 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-17 (Thursday)

Window: last 24–48h (Sep 16–17). Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 80Top actor QilinM&A L30D $500M

Number of the day6the number of months AWS has now been unable to restore service to its Bahrain and part of its UAE availability zone after Iranian drone strikes; the company's Sep 15 update, its first since April, says the physical damage "exceeded what our regional and multi-AZ services are designed to withstand." CNBC
  • 5 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-16 (Wednesday)

Confidential · 16 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-16 (Wednesday)

Window: last 24–48h (Sep 15–16). Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 78Top actor QilinM&A L30D $500M

Number of the day7.49 million — the customer-record count a threat actor claims to have stolen from Texas utility CenterPoint Energy via an exposed API; the company confirms unauthorized access but disputes the figure. SecurityWeek
  • 5 min read

🛡️ Daily Cybersecurity Briefing — 2026-09-15 (Tuesday)

Confidential · 15 Sep 2026

🛡️ Daily Cybersecurity Briefing — 2026-09-15 (Tuesday)

Window: last 24–48h (Sep 14–15). Severity: 🔴 CRITICAL · 🟡 HIGH · 🟢 MEDIUM.

Threat level GUARDEDVictims L30D 74Top actor QilinM&A L30D $500M

Number of the day9.8the CVSS score of a Cisco Secure Email Gateway flaw that lets a single crafted inbound email hand an unauthenticated attacker root on the appliance, already under active exploitation and KEV-listed the same day Cisco disclosed it. CISA KEV · cybersecuritynews.com