ThreatVectr
Tag

#Microsoft Teams

15 stories taggedMicrosoft Teams.

Illustration: a darkened corporate open-plan office at night
Identity & Access

Fake IT Support on Microsoft Teams Is Now a Full Corporate Break-In

Microsoft says attackers are cold-calling staff on Teams, talking them into a screen share, then walking straight through the network to domain controllers.

4 min read
An IT team working at workstations with network configuration tools and firewall settings open on screens, with official notification documents from a cloud ser
Cloud Security

Microsoft is moving Teams and Microsoft 365 to new web addresses, here is what your IT team needs to do

Both services are redirecting to new cloud.microsoft domains by early October. Businesses need to update firewall and network settings now, or users could lose access.

3 min read
Close-up of Surface Pro and Surface Laptop devices on a desk with error screens frozen on display, Windows Update notification visible, frustration evident thro
Vulnerabilities

Microsoft Teams and new Outlook crash on ARM Windows laptops after August updates

Surface Pro 11 and Surface Laptop 7 owners running Windows 11 24H2 hit launch failures after installing the August 2026 security updates.

4 min read
An employee's computer screen showing a Microsoft Teams call interface with a fake IT support representative, while the attacker gains remote desktop access sho
Identity & Access

Criminals Pose as IT Support Inside Microsoft Teams to Take Over Company Networks

A hacking campaign called Spring Ring tricked more than 150 employees at ten-plus companies into handing over remote control of their computers, all through a fake Teams call from a fake help desk.

4 min read
A Microsoft Teams meeting window with a blocking interface appearing across an external bot's entry attempt, showing the approval or rejection mechanism
Identity & Access

Microsoft Teams gets a new switch that kicks uninvited bots out of meetings

Admins can now auto-block external bots from joining Teams calls, closing a quiet side door that attackers have been probing.

3 min read
A computer monitor displaying a convincing Windows lock screen with an error message, while Microsoft Teams is visible in the background with a suspicious messa
Threat Intelligence

SynkLoader: The Fake IT Help Desk Trick Hiding Behind a Phony Windows Lock Screen

Attackers posing as internal IT are pushing a new modular malware through Microsoft Teams, complete with a convincing fake login prompt built to steal Windows passwords.

4 min read
Microsoft cloud service icons (SharePoint, Teams, Edge) arranged on a server, with hidden malware threads running through the environment, visualized as invisib
Threat Intelligence

TWINLOOT Malware Hides Inside Microsoft's Own Cloud to Steal Passwords

A newly discovered piece of malicious software uses Microsoft SharePoint, Teams, and Edge to run its operation, making it nearly invisible to the tools most companies rely on.

4 min read
A collection of device screens—laptop, tablet, smartphone—each displaying a security patch notification downloading simultaneously, with progress bars advancing
Vulnerabilities

Microsoft and Apple Rush Out Patches for Flaws That Let Attackers In Without a Password

Several of the Microsoft bugs score a perfect 10 out of 10 for severity. Apple quietly fixed a flaw that lets someone access your screen without logging in.

3 min read
A Microsoft Teams chat window on a desktop showing an incoming call from a support number, with a ransomware encryption notification appearing simultaneously on
Ransomware

Fake IT support calls on Microsoft Teams are ending in ransomware within a day

A gang tracked as STAC4749 is phoning staff on Teams, pretending to be helpdesk, and locking company files with Chaos ransomware in under 17 hours.

4 min read
A desktop computer screen showing a fake Microsoft Teams update notification window overlaid on top of legitimate system windows, with a bogus progress bar load
Threat Intelligence

Fake Microsoft Teams Update Pushes Remote-Control Tools onto Victims' PCs

A phishing run tracked as Operation BlueDash uses a bogus 'secure document' lure and a counterfeit Microsoft Store page to install legitimate remote-access software on target machines.

4 min read
Cyber-attack command center aesthetic with multiple monitors displaying fake Zoom and Microsoft Teams landing pages, cryptocurrency wallet monitoring tools, and
Threat Intelligence

North Korean Hackers Run Fake Zoom and Teams Sites to Rob Crypto Wallets

BlueNoroff's phishing kit screens visitors' crypto wallets before deciding who gets the malware, researchers say.

4 min read
A Microsoft Teams chat window with hundreds of unread phishing messages flooding across the screen simultaneously, while a timeline graph beside it shows a shar
Threat Intelligence

After Tycoon2FA Was Shut Down, Phishing Criminals Went Looking for New Tricks

Microsoft's Q2 2026 email threat report shows that busting a major phishing-for-hire service slashed attack volume by 92%, but criminals quickly pivoted to Microsoft Teams chats and automated campaigns that hit tens of thousands of organisations in hours.

4 min read
An office with multiple blank computer monitors and inactive workstations, devices mid-shutdown with spinning loading indicators visible on screens, overheard f
Cloud Security

Microsoft 365 hit by outage knocking out Teams, SharePoint and Excel

Downdetector logged more than 2,400 user reports as Microsoft opened incident MO1437424 and began investigating.

3 min read
Illustration: a modern open-plan office desk at dusk
Threat Intelligence

Fake IT Helpdesk Calls on Microsoft Teams Are Planting EtherRAT on Company PCs

Attackers pose as internal support staff over Teams voice calls, then walk employees through installing remote-access tools that drop a Node.js trojan.

4 min read
Illustration: A sleek corporate conference room
Policy & Regulation

Microsoft Tightens Teams Meeting Controls for External AI Bots

A new admin policy requires organizer approval before automated external participants can join Teams meetings, a quiet but consequential shift in how enterprises govern AI access to sensitive calls.

2 min read
© 2026 Threat Vectr