Phishing campaigns aimed at stealing Microsoft user credentials are using Google Forms to dupe potential victims, security researchers warn.

Cybercriminals managed to increase their odds of success by breaking into a legitimate website to host and send bogus email messages, according to a report from Cofense.

The phishing messages masquerade as important alerts from the company’s IT department asking recipients to update their Office 365 suite of applications or face having their account suspended. Clicking on an “Update Now” button in Google Forms after entering their username and password sends the victim’s credentials to the attackers.

Take a Closer Look

The external Google webpage provides an authentic SSL certificate, researchers explained, which makes it even more likely that users will be fooled into complying with the phishing email’s request.

If they take the time to look more carefully, however, Office 365 users might notice some aberrations in the phony Microsoft login page. Some of the tell-tale signs include the use of asterisks rather than letters and capitalizing more than half of the letters on the page. Unlike a legitimate login page where passwords would be obscured, the credentials appear in plain text as a victim types them in. This happens even before they click the “Update Now” button on the form.

Researchers suggested the technique has been used in multiple phishing campaigns, most of which have been discovered over the past several weeks. Google is not alone in having its technology harnessed for nefarious purposes. Just last month researchers uncovered a phishing technique that made use of Microsoft’s Sway application.

Don’t Fall for Fraudulent Google Forms

Unfortunately, most organizations don’t think through how they would react to a successful phishing attempt, which is why simulation exercises can be helpful. Sometimes attackers will still be successful, so ensure remediation measures for phishing attacks are woven into an incident response plan that involves all departments from human resources to IT.

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