Hello
About three months ago I sent an apology for inadvertently mixing distributions.
I'm assuming that you have not received that apology.
Anyway the security problem remains - obviously I'm having difficulty using Debian in the usual manner.
I can assure you that I haven't tried to interfere with security in any way.
It's not an excuse any longer but in the old days the advice was-
if you have a problem, "Try to fix it yourself".
As a mater of course In trying to get advice I always search the excellent Debian documentation first.
I hope that you receive this transmission.
Best Wishes donald