Browsing Tag
Microsoft Teams
20 posts
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.
Fake Teams Installers Dropping Oyster Backdoor (aka Broomstick)
Hackers are using fake Microsoft Teams installers found in search results and ads to deploy the Oyster backdoor. Learn how to protect your PC from this remote-access threat.
Hackers Hide RMM Installs as Fake Chrome Updates and Teams Invites
New research from Red Canary and Zscaler shows phishing lures now drop RMM tools like ITarian and Atera,…
Microsoft Teams Vishing Used to Deploy Malware via TeamViewer
A vishing scam via Microsoft Teams led to attackers misusing TeamViewer to drop malware and stay hidden using simple but effective techniques.