FIU cybersecurity researchers warn websites that request access to your files might be able to bypass antivirus software and carry out major ransomware attacks.

Free photo editors, tax document assistants and other online apps that ask for permission to access your media can encrypt files and effectively take control of them, an FIU College of Engineering and Computing study shows. These attackers could then demand ransom in exchange for the files’ safe return.

The researchers say that the hack works on all three major PC operating systems: Windows, Linux and Mac OS. Some cloud services such as Apple Cloud, Box, Google Drive, OneDrive and Dropbox are also susceptible, as well as external drives.

Read more at FIU News.