Beware of Unknown Microsoft Teams Chats

As Microsoft Teams continues to make communication easier between organizations, it’s now common to receive chat messages from people outside your company — whether they’re clients, vendors, or partners.

That flexibility is convenient, but it also opens a new door for cyber attackers . Recently, scammers have started exploiting Teams’ external chat feature to send malicious links and files through what look like legitimate chat requests.

This type of scam is called a click-lure attack , and it’s quickly becoming one of the newest tactics used to breach businesses.

At Felixous Technology , we’re dedicated to helping organizations stay protected across every communication platform — including Microsoft Teams.

A click-lure attack starts with a simple Teams chat request. The message often appears to come from a professional, partner company, or even an internal department.

The attacker’s goal? To make you click before you think.

Here are some common examples of what these messages might say:

Once the victim clicks a malicious link or opens an infected file, malware can be installed — or the attacker can capture login credentials. From there, they can gain access to company systems, confidential files, or internal chats.

It’s not always easy to spot a scam, but these red flags are common in click-lure attacks:

Suspicious Behavior What It Usually Means You don’t recognize the person or company Attempt to impersonate a legitimate contact Urgency or pressure in the message Designed to make you react quickly Unexpected links or attachments Possible malware or phishing Vague or unclear purpose No legitimate business reason for contact Free or generic email domains Common disguise tactic If something feels “off” , it probably is. Trust your instincts.

Here are a few simple but powerful steps every employee should follow to stay safe on Microsoft Teams:

Don’t click links or open attachments from unknown or unexpected senders.

Verify the sender’s identity through another communication channel — like email or a phone call.

Never share passwords, MFA codes, or sensitive internal files over Teams chat.

Use the Block and Report feature in Teams if you suspect a scam.

When in doubt , stop and reach out to Felixous Technology support for help.

A few seconds of caution can prevent hours — or even days — of recovery time.

🧩 How Felixous Technology Protects Your Organization

Cybersecurity isn’t just about tools — it’s about proactive management. Our team can help your organization strengthen Microsoft Teams security by:

Restricting or disabling external chat where appropriate

Allowing communication only with approved partner domains

Monitoring suspicious login and chat activity

Delivering cyber awareness training for employees

Implementing advanced endpoint and identity protection

With these layers of defense, your business can collaborate securely while minimizing risk.

A single click can start a major security incident.

Taking two seconds to verify can stop one.

Always pause before you click — and encourage your team to do the same.

Protecting your business — so you can focus on running it.

Managed IT, Cybersecurity, Cloud Support & Ransomware Protection in Canada