Chrome OS’s Verified Boot is being updated from SHA1 to SHA256.
(Hopefully Android’s Verified Boot is also being updated…)
Chromium Blog Chromium Blog: DM Verity Algorithm Change
One of the foundational security features of Chromebooks is Verified Boot, which protects our users from potentially malicious software being run on their devices. The last chain of verification in this process is to validate the integrity of the root file system (rootfs). This blog post describes a recent enhancement to this rootfs validation to increase the cryptographic strength against attackers. […]
https://blog.chromium.org/2019/10/dm-verity-algorithm-change.html
Firmware Security 