Cybersecurity briefing, 2026-10-04

Warlock is still turning on-prem SharePoint access into ransomware, now across at least four organizations.

• Rejetto HFS Auth Bypass Hit Within a Day
• Warlock Keeps Turning SharePoint Footholds Wider
• TA419 Steals Microsoft 365 Sessions With Fake Policy Outreach
• MI5 Ties University Work to Chinese Spy Funding

Recent editions

• Saturday, October 3, 2026: Warlock Keeps Turning SharePoint Footholds Wider · 14 stories
• Friday, October 2, 2026: Warlock Keeps Turning SharePoint Footholds Wider · 19 stories
• Thursday, October 1, 2026: Cisco SD-WAN Bypass Hits the Control Plane · 19 stories
• Wednesday, September 30, 2026: FortiMail Exploitation Moves Into Active Hunts · 17 stories
• Tuesday, September 29, 2026: Artifactory Login Bypass Hits Supply-Chain Trust · 17 stories
• Monday, September 28, 2026: JadePuffer Used Azure Identities to Wipe Recovery Paths · 15 stories
• Sunday, September 27, 2026: AI Agents Leak Screenshots, Prompt Data Escapes Again · 4 stories