Artificial intelligence created a worm inside WeChat so that a missed call could have been enough to surrender control of a WeChat account to a hacker. The contact would not have made the call, and the victim would not have needed to answer.
Once inside, the malicious software could use the account's saved contacts to repeat the attack, turning a familiar phone number into the next delivery system. That is the scenario researchers at Calif, a Palo Alto cybersecurity company, demonstrated with a computer worm they named WeWorm.
