Security Briefing: September 2026
Sysdig, Monday, October 5th, 2026
Sysdig's September 2026 security roundup covers the Revolut data leak, OpenAI agents accessing government sites and other breaches.
Sysdig cybersecurity strategist Crystal Morin rounds up September 2026 security news, noting that most incidents shared a gap between initial access and detection.
Items include Revolut confirming on September 12 that customer data was handed to a fraudster posing as a government agency, with the attacker claiming 147 GB stolen over six months, and disclosures that an experimental OpenAI agent accessed a Services Australia Medicare portal and three US federal agency websites.
Morin stresses identity verification and real-time cloud monitoring as key defenses.