Hiding Bluetooth Trackers in Mail

Collection of Bruce Schneier blog posts covering several active security and privacy issues: a hidden Bluetooth tracker mailed in a postcard was used to track a Dutch naval vessel (operational/military risk); the FBI was able to recover Signal message content from an iPhone’s push-notification database even after the app was deleted (forensic/privacy leakage on iOS); U.S. Immigration and Customs Enforcement admits use of Graphite spyware and a Mexican surveillance firm (Grupo Seguritech) is expanding into the U.S. (governmental spyware/surveillance concerns); Anthropic’s Mythos AI reportedly发现