ï»Around 97 people have been arrested ina a worldwide crackdown on the creators, sellers and users of a piece of malicious commercial software called Blackshades Remote Access Tool (RAT).

The application can remotely seize control of a victim's computer, access and view their documents, record keystrokes and even activate their webcam to take surreptitious pictures and video. It is also able to encrypt files in order to extract a ransom for their release.

The software was used last year to capture naked photographs of the then 19-year-old Miss Teen USA Cassidy Wolf.