Browsing Tag
Microsoft Teams
23 posts
‘Spring Ring’ Vishing Attack Uses Fake IT Calls on Microsoft Teams to Install Malware
A new Teams vishing campaign called Spring Ring used fake IT support calls to trick employees into installing remote-access tools (RAT) and malware.
New TWINLOOT Malware Steals Windows Passwords Via Fake Lock Screen
New TWINLOOT malware hides command traffic inside SharePoint, Teams and Edge while stealing Windows passwords through a convincing fake lock screen.
Fake IT Calls on Microsoft Teams Lead to GoGRPC Backdoor Infections
Fake helpdesk callers use Microsoft Teams and Quick Assist to access employee computers, where attackers install new GoGRPC backdoor in suspected ransomware operations
DragonForce Ransomware Abused Microsoft Teams to Hide Malware Activity
DragonForce ransomware abused Microsoft Teams relay systems to hide a custom backdoor, steal files and encrypt systems at a US services firm.
UNC1069 Targets Node.js Maintainers via Fake LinkedIn, Slack Profiles
North Korean group UNC1069 targets Node.js maintainers using fake LinkedIn and Slack profiles to spread malware and compromise open source packages.
Fake Zoom, Teams Meeting Invites Use Compromised Certificates to Drop Malware
A new phishing campaign is using stolen certificates from TrustConnect Software PTY LTD to sign malware. By impersonating updates for Zoom and Microsoft Teams, hackers install RMM tools to gain persistent, privileged access to networks
Fake Microsoft Teams Billing Phishing Alerts Reach 6,135 Users via 12,866 Emails
Scammers are abusing Microsoft Teams invitations to send fake billing notices, with 12,866 emails reaching around 6,135 users in a phone-based phishing campaign.
Fake Microsoft Teams and Google Meet Downloads Spread Oyster Backdoor
The Oyster backdoor (also known as Broomstick) is targeting the financial world, using malicious search ads for PuTTY, Teams, and Google Meet.
Microsoft Teams Flaw in Guest Chat Exposes Users to Malware Attacks
New research from Ontinue exposes a major security flaw in Microsoft Teams B2B Guest Access. Learn how attackers bypass all Defender for Office 365 protections with a single invite.
Microsoft Teams Flaws Allowed Attackers to Fake Identities, Rewrite Chats
Microsoft Teams vulnerabilities let attackers impersonate users, edit chat history, and spoof calls before Microsoft issued security fixes in late 2025.