A team of university security researchers has found a chip-level exploit in Apple Silicon Macs. The group says the flaw can bypass the computer’s encryption and access its security keys, exposing the Mac’s private data to hackers. The silver lining is the exploit would require you to circumvent Apple’s Gatekeeper protections, install a malicious app and then let the software run for as long as 10 hours (along with a host of other complex conditions), which reduces the odds you’ll have to worry about the threat in the real world.
The exploit originates in a part of Apple’s M-series chips called Data Memory-Dependent Prefetchers (DMPs). DMPs make the processors more efficient by preemptively caching data. The DMPs treat data patterns as directions, using them to guess what information they need to access next. This reduces turnarounds and helps lead to reactions like “seriously fast,” often used to describe Apple Silicon.
The researchers discovered that attackers can us
