Phishing and suspicious behavior in Outlook (2024)

Here are some of the most common types of phishing scams:

• Emails that promise a reward, such as “Click this link to get your tax refund!”

• A document that appears to come from a friend, bank, or other reputable organization. The message is something like “Your document is hosted by an online storage provider and you need to enter your email address and password to open it.”

• An invoice from an online retailer or supplier for a purchase or order that you did not make. The attachment appears to be a protected or locked document, and you need to enter your email address and password to open it.

• Read more atLearn to spot a phishing email.

• If you think someone has accessed your Outlook.com account, or you received a confirmation email for a password change you didn’t authorize, readMy Outlook.com account has been hacked.

1. In the message list, select the message or messages you want to report.

2. Above the reading pane, select Junk > Phishing > Report to report the message sender.

   

Note:When you mark a message as phishing. the senderis reported but is not blocked from sending you additional messages.To actually blocka sender, add the senderto your blocked senderslist. For more information, see Block senders or mark email as junk in Outlook.com.

Outlook shows indicators when the sender of a message is unverified, and either can't be identified through email authentication protocols or their identity is different from what you see in the From address.

• You see a '?' in the sender image

  When Outlook can't verify the identity of the sender by using its email authentication techniques, it displays a '?' in the sender photo.

  

• Not every message that fails to authenticate is malicious. However, you should be careful about interacting with messages that don't authenticate, especially if you don't recognize the sender.Also, if you recognize a sender that normally doesn't have a '?' in the sender image, but you suddenly start seeing it, that could be a sign the sender is being spoofed (impersonated). You can learn more about Spoof Intelligence from Microsoft 365 Advanced Threat Protection and Exchange Online Protection in the Related topics below.

  See Also

  Configure anti-phishing policies in Microsoft Defender for Office 365 - Microsoft Defender for Office 365

• The sender's address is different than what appears in the From address

  The email address you see in a message may be different than what you see in the From address. Sometimes phishers try to trick you into thinking that the sender is someone other than who they really are.

  WhenOutlookdetects a difference between the sender's actual address and the address on the From address, it shows the actual sender using the underlined via tag.

  

  In this example, the sending domain "suspicious.com" is authenticated (not necessarily malicious),but the sender put "unknown@contoso.com" in the From address. Not every message with a via tag is suspicious. However, if you don't recognize a message with a via tag, you should be cautious about interacting with it.

  In Outlook and the new Outlook on the web, you can hover your cursor over a sender's name or address in the message list to see their email address, without needing to open the message.

  

Note:This feature is only available if you sign in with a work or school account.

Help Microsoft stop false-tech-support scammers -- whether they claim to be from Microsoft or from another tech company. Report tech support scams at this link:

https://msrc.microsoft.com/report/