I used
sudo apt-get update
sudo apt-get upgrade
before I read https://www.debian.org/security/2019/dsa-4371
There was I change that my PC got exploited/hacked/virused. So I used
chkrootkit
and deleted all that was infected After that I reinstall all packages with changed debsums
sudo apt-get --reinstall install $(debsums -c 2>&1 | grep -E -o 'from [^ ]* package' | cut -d\ -f2 | sort -u)
Is my PC safe now ? Is it possible to have some virus or stuff like that running on my PC ? How to remove it ?