alt.hn

4/19/2026 at 12:36:38 AM

Deutsche Telekom has a bad DKIM key

https://infosec.exchange/@badkeys/116407565746342278

by icco

4/20/2026 at 7:39:29 AM

They've apparently had this key in use for more than ten years, and before this issue was widely publicised around 2010 or so a great many other major providers and companies around the world used similar-sized keys. No-one bothered attacking them, which means they served their purpose.

Also, using a small key like that means you're not pointlessly burning CPU cycles on something that attackers don't care about. So it seems like a win all-round.

by pseudohadamard