From theregister.com
Version 90 of Google’s Chrome browser includes a bit of extra security for users of recent versions of Windows and the latest x86 processors, in the form of hardware-enforced stack protection.
This basically means that, if your PC supports it, it’s a bit harder for malicious websites to exploit bugs in Chrome to hijack your computer.
Released in April, Chrome 90 supports Intel’s Control-flow Enforcement Technology (CET) [PDF], a processor-based defense against exploits that use something like Return Oriented Programming (ROP) to violate a program’s control-flow integrity (CFI).