Have you heard about the recent wave of Microsoft Teams brand spoof calls? If you're worried because your establishment relies on this platform for collaboration, you'll be glad to know that Microsoft is introducing new security measures. Learn more about them here.
What Exactly Are Spoof Calls?
As the name suggests, spoof calling is the practice of obfuscating the origin of a phone call by falsifying the caller ID information displayed on the recipient's device. Threat actors use it to make a call look like it's coming from a trusted number, such as a bank, a government agency, or, in this particular case, well-known brands.
After gaining your trust, scammers might ask for financial details, login credentials, and other sensitive information.
How Microsoft Teams Is Addressing Brand Impersonation Attacks
The company is planning to add a Brand Impersonation Protection feature, which scans all inbound calls from first-contact external callers. Warnings should appear for Microsoft Teams users when the platform perceives malicious VoIP calls. You can then choose to accept, block, or end flagged calls.
Rollout may begin mid-March 2026 and finish by the end of the month. If you're worried about backward compatibility or implementation friction, other existing Teams Calling policies will remain unchanged. The feature also functions independently from current security configurations to avoid disrupting established workflows.
Preparing Your Team Against Phishing and Social Engineering Tactics
Security updates are always a welcome addition, but you shouldn't solely rely on them. Teach your company's employees, from management to entry-level staff, these basic but effective procedures:
- Never answer calls from unknown numbers.
- Never disclose Social Security numbers, account numbers, mother's maiden names, passwords, and other personal information over unexpected calls.
Proactive Security Measures Beyond Caller ID Spoofing in Teams
Microsoft is actively improving its video conferencing app to prevent other forms of attacks. In September 2025, for example, they rolled out Malicious URL Protection. Whenever users send a link, the system scans it against threat intelligence databases and flags it as malicious if it finds a match.
Microsoft also released its Weaponizable File Type Protection tool in the same month, which automatically blocks files that attackers could potentially exploit. If you want to stay ahead of Microsoft Teams security alerts, check the official blog regularly for the latest information.
Stay Wary of Microsoft Teams Spoofed Calls and Other Scams
Microsoft Teams brand spoof calls are a growing symptom of how attackers are adapting to exploit the most popular platforms. Instead of waiting for service providers to catch up, businesses should stay proactive by prioritizing employee training, leveraging advanced security tools, and fostering a culture of vigilance.
