Skip to Content
Security & privacy

Clever new phishing attack is hitting Office 365 accounts

Phishing emails are very popular tools for cybercriminals. They send them out relentlessly, hoping that their casted nets are big enough to reel in a few victims here and there.

As usual, these opportunistic scammers craft emails and websites that look like the real deal. Recognizing these fake messages can be difficult to the untrained eye.

Take this new attack, for example. All it takes is a careless click and these criminals can take over your entire Office 365 account! Read on and see all the characteristics of this attack so you won’t be the next victim.

New Office 365 phishing attack

A new phishing attack has been spotted and it is designed to steal Microsoft account credentials by sending out emails that look like email non-delivery notifications from Office 365.

Here’s an image of the attack so you’ll know what to look for:

Image Credit: InfoSec

The campaign was discovered by security researcher Xavier Mertens while reviewing the recent data collected by his email “honeypots.” Note: A honeypot is a decoy computer or email account used by experts to lure and trap malware or spam attacks.

It starts with an email that pretends to be a non-delivery receipt from Office 365 saying that Microsoft found several undelivered messages in your account.

Conveniently enough, the phishing email comes with a “Send Again” button which then pulls up a phishing page that looks exactly like the real Office 365 login tool.

Image Credit: InfoSec

But don’t be fooled! It’s definitely fake and its sole purpose is to steal away your Microsoft account password.

If you bite and attempt to login, an automated script on the phishing site will capture your information and will then redirect you back to the official Office 365 login page as if everything’s fine and dandy.

For comparison. here’s a real non-delivery receipt from Office 365:

As you can see, the official non-delivery notification simply outlines the steps to fix the problem and it does not have a link to resend the unsent emails. It’s a subtle difference but it’s the meat and bones of this entire phishing attack.

Click here to read Xavier Mertens’ full report.

How to protect against phishing attacks:

This Office 365 phishing attempt is not the only one out there. Millions of phishing emails are being sent out at any given time. Here are general tips to protect yourself from these scams:

Tech smarts in 2 minutes a day

Get my Daily Tech Update and the Digital Life Hack. Just one minute each and arm you with the tech knowledge you need to impress your boss and friends with how smart you are.