So be that as it may, I read this on the release notes for Bookworm:
Now I am trying to decide if I should switch to Bullseye's security updates or stick with Bookworm's, even though they may be delayed. So what I wonder is, what kind of security breaches have people had that might have caused some serious problems for individual users like myself? Any advice from having had firsthand experience would be helpful.Please note that security updates for testing distribution are not yet managed by the security team. Hence, testing does not get security updates in a timely manner. You are encouraged to switch your sources.list entries from testing to bullseye for the time being if you need security support.