With hackers deploying sophisticated attacks against operating systems, processors, and even firmware, manufacturers have increasingly turned to a tamper-resistant processor\u2014or part of one\u2014often called a "secure enclave" to stymie all sorts of attacks. They place in that immutable chip the "root of trust" on a device, relying on it to run cryptographic checks every time the system starts to make sure nothing has been subtly, maliciously altered.