Hi Hervé and debian-user-french, My apologies: I do not speak French but I see a connection between two threads here with:
https://lists.debian.org/debian-user-french/2023/01/msg00079.html So this issue has occurred at least twice and appears to be related to pattern-matching safety checks performed by Sophos software on HTTP downloads. I would recommend collecting the "pattern version" information from the error messages, and contacting Sophos support with those and the URL of the Apache2 package that is prevented from download. The apache2-data .deb file looks OK to me when I download it: I don't see any deeply-nested archives inside it. Regards, James