How One Phishing Email Let Attackers Bypass MFA and Redirect a Company’s Vendor Payments
An HR-themed phishing lure led a finance employee to a fake Microsoft 365 login that stole an authenticated session cookie, letting attackers bypass MFA entirely. Over the following...
Microsoft Is Merging Consumer and Enterprise Copilot — Security Teams Should Watch the Seams
Microsoft is consolidating its consumer and business Copilot apps into a single Microsoft 365 Copilot experience, reachable from a unified m365.cloud.Microsoft address. Microsoft insists personal and organizational data...
New Outlook Flaw Lets Attackers Run Malicious Code Through a Single Booby-Trapped Email Attachment
Microsoft has patched a high-severity remote code execution flaw in Outlook, tracked as CVE-2026-70329, that can be triggered when a victim opens a specially crafted Office file. The...
Microsoft Is Giving Teams Admins a Single Dashboard to Catch Phishing and Malware in Chats
Microsoft is rolling out a new Security Detection Report inside the Teams admin center that consolidates impersonation attempts, malicious links, and dangerous file types into one exportable dashboard....
Greatness Phishing Service Lets Attackers Slide Past MFA Into Microsoft 365 Inboxes
A phishing-as-a-service platform called Greatness is stealing live authentication tokens rather than passwords, letting attackers walk past multi-factor authentication and into Microsoft 365 mailboxes. A recent campaign hid...
Researchers Show How a Hidden Prompt Can Turn Word Copilot Into a Self-Spreading AI Worm
A newly disclosed weakness in Microsoft Copilot for Word shows how invisible text buried in a document can hijack the AI assistant, quietly alter content, and copy itself...
HOLLOWGRAPH Malware Turns Microsoft 365 Calendars Into a Covert Spy Channel
Group-IB has uncovered HOLLOWGRAPH, a stealthy malware component that hides its command-and-control traffic inside Microsoft 365 calendar invites dated decades in the future. The tool shows technical overlap...
New ARToken Phishing Kit Abuses Microsoft’s OAuth Device Code Flow to Hijack Microsoft 365 Accounts
Cisco Talos has uncovered ARToken, a phishing panel that abuses Microsoft's device code sign-in flow to steal Microsoft 365 session tokens without a password or MFA prompt. The...