Security researchers found a vulnerability in iOS software that may have allowed hackers to steal data from almost a billion Apple devices over the past two years. Reuters reported that a California-based security firm discovered the bug while investigating a client’s cyberattack that occurred in late 2019. The attack exploited a flaw whereby a blank email sent to the victim triggers a crash and reset of the iOS Mail app, swinging open a backdoor for hackers in the process. The attackers then gain access to whatever information is kept in the Mail app, such as contact lists, photos, and confidential messages.