Hey Guys,

Apologies for tuning in late, but is this issue resolved?

Lighthouse (Best Practices Module) is still penalizing us for using Expect-CT in our header. When we remove Expect-CT from our header, the issue is fixed.

We're using Lighthouse Version 100.0.0.0.

Thank you!

Lighthouse (Best Practices Module) is still penalizing us for using Expect-CT in our header. When we remove Expect-CT from our header, the issue is fixed.

This is WAI. The Expect-CT header has been deprecated in Chrome. From the deprecation message:

"The Expect-CT header is deprecated and will be removed. Chrome requires Certificate Transparency for all publicly trusted certificates issued after April 30, 2018."

Hey @adamraine,

Thank you. Valuable info. We'll leave Expect-CT off our header.

It looks like many HTTP Header Checkers need to update their code. They're suggesting that Expect-CT should be added to tested website(s).

Example: securityheaders.com

Details: https://prnt.sc/V1EsBAlDosTf

Above is FYI only. Case closed for us.

Again, thank you!