https://thenextweb.com/google/2018/10/18/google-explains-how-its-new-titan-m-chip-keeps-the-pixel-3-secure/

Despite its Google+ debacle, Google continues to claim that it pays close attention to the security of users. It has included a special chip in its new Pixel phones called Titan M, which protects consumers from bad actors. Google says that the enterprise-grade security chip protects your data and the operating system.

Last year, Google included a security module in the Pixel 2 to protect the lock screen and on-disk encryption. This year the company has upped its game by including several features in the Titan M chip: