Security Advisory Issued for OneClass Fake Chrome Extension

Wed, 12/14/2016 - 14:43 -- wentod

On Tuesday, December 13, 2016, a security advisory was issued regarding the OneClass fake Chrome extension, and users are urged to NOT install this extension.

Vulnerability Overview

The OneClass Chrome extension is not available directly via search in the Chrome Extensions Store, and students are being phished to install it.  During installation, the extension requests permissions to "Read and change all your data on the websites you visit," and adds a button inside the Learn pages to "Invite Your Classmates to OneClass."

The plug-in, which will email all the students in a students' class to promote the OneClass plugin/product, also contains code that attempts to collect and send the users' credentials, including both username and password.

The content of the email message reads as follows:

"Hey guys, I just found some really helpful notes for the upcoming exams for Rensselaer courses at {link}. I highly recommend signing up for an account now that way your first download is free!"

All users are urged to please NOT install this extension. If you do see the install button in your Chrome browser, navigate to the Chrome browser settings and remove the plugin.

In addition, any users who receive an email like the one above are asked to please NOT click on any link within the message, and to just delete it.