Macworld A group of university researchers has revealed a vulnerability in Apple’s M-series chips that can be exploited to gain access to cryptographic keys. Dubbed “GoFetch,” the vulnerability can be used by an attacker to access a user’s encrypted files. On the GoFetch overview website, the researchers explain that GoFetch targets the M-series chips’ data memory-dependent prefetcher (DMP), which predicts the memory addresses that running code will use, to optimize performance. However, Apple’s DMP implementation sometimes confuses actual memory content with the pointer used to predict the me…