How to Spot Fake Microsoft Teams Security Alert Emails Targeting Australian Small Businesses

Summary

This guide helps you troubleshoot and resolve: How to Spot Fake Microsoft Teams Security Alert Emails Targeting Australian Small Businesses. Follow the steps below to fix the issue.

Common Causes

Cybercriminals are increasingly targeting Australian small businesses with fake Microsoft Teams security alert emails. These phishing messages attempt to trick employees into clicking malicious links and entering their Microsoft 365 credentials on spoofed login pages. Once attackers gain access, they can steal sensitive business data, send further phishing emails from your organisation's accounts, and compromise your entire cloud environment. Learning to spot the warning signs is the first line of defence.

Common Warning Signs

Fake Microsoft Teams security alert emails often share several telltale characteristics. Review each email carefully before clicking any links or downloading attachments.

• The sender address does not end in @microsoft.com or @teams.microsoft.com
• The email uses generic greetings such as "Dear User" instead of your name
• Urgent or threatening language claiming your account will be suspended
• Links that appear to go to Microsoft but actually lead to unrelated domains
• Poor spelling, grammar, or formatting inconsistent with official Microsoft communications
• Requests to verify your password, MFA code, or security settings via email

How to Verify a Suspicious Email

1. Do not click any links or open attachments in the suspicious email.
2. Hover your mouse over any links to reveal the actual destination URL. If it does not match an official Microsoft domain, do not click it.
3. Check the sender's full email address, not just the display name. Cybercriminals often spoof the display name to appear legitimate.
4. Log in to Microsoft 365 directly by typing https://www.office.com into your browser, rather than using links from the email.
5. Once logged in, check your Microsoft 365 admin centre or Teams admin centre for any genuine security notifications.
6. If you cannot verify the email through official channels, treat it as a phishing attempt.

Checking Link Destinations Safely

On most desktop email clients and web browsers, hovering your cursor over a hyperlink displays the destination URL in the bottom corner of the window. On mobile devices, press and hold the link to preview the URL without opening it. Look for misspelled domains such as micros0ft.com, teams-security-alert.com, or unrelated addresses entirely.

What to Do If You Receive a Fake Alert

1. Do not reply to the email or forward it to colleagues.
2. Mark the message as junk or phishing in your email client.
3. Delete the email from your inbox and empty the deleted items folder.
4. Report the message to your IT administrator or managed service provider.
5. If you already clicked a link or entered credentials, proceed to the incident response steps below.

Note: Legitimate Microsoft security notifications will never ask you to reply with your password or MFA verification code via email.

If You Suspect Your Account Was Compromised

1. Immediately change your Microsoft 365 password from a trusted device.
2. Review your account sign-in activity in the Microsoft 365 admin portal for unfamiliar locations or devices.
3. Check your email forwarding rules in Outlook for any rules you did not create.
4. Remove any suspicious mobile apps or devices connected to your Microsoft account.
5. Notify your IT support provider so they can scan for further signs of compromise.

Warning: If you entered your Microsoft 365 credentials on a suspicious page, assume your account is compromised. Change your password immediately and enable multi-factor authentication if it is not already active.

Protecting Your Organisation

• Enable multi-factor authentication (MFA) on all Microsoft 365 user accounts.
• Conduct regular phishing awareness training for all staff members.
• Ensure your email filtering and spam protection are configured to block known phishing domains.
• Encourage employees to verify unusual security alerts through internal IT channels before acting.
• Keep all operating systems, browsers, and Microsoft 365 apps updated with the latest security patches.

If you receive a suspicious Microsoft Teams security alert and are unsure whether it is legitimate, avoid interacting with the message and Open a Ticket for assistance from our Brisbane-based support team.

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