Android Chrome 99 expands Certificate Transparency, breaking all MitM dev tools

Certificate transparency is superb improvement to HTTPS certificate security on the web that’s great for users and businesses, but on Android it creates a huge problem for the many developer tools like HTTP Toolkit which install trusted system certificates into Android to intercept & debug app traffic. This doesn’t appear in the main announcements anywhere, but buried deep in the enterprise release notes for Chrome v99 there’s a small note that says: Certificate transparency is already enforced on desktop platforms, and for some Android users. Chrome 99 expands certificate transparency to all