I used

sudo apt-get update
sudo apt-get upgrade

before I read https://www.debian.org/security/2019/dsa-4371 Is there a way to check if my PC got exploited/hacked/virused ?

  • Make a note of all packages installed, and compare the checksum of the locally-installed package file to the checksum of a copy of the package in a known-good repository. – DopeGhoti Jan 24 '19 at 20:23
  • @DopeGhoti Is there a guide, article or documentation where I can read how to do this ? – nox Jan 24 '19 at 20:31
  • try running chkrootkit – FabioM Jan 24 '19 at 21:27
  • Suggestion : install apparmor from debian stretch backports. That'll save you from being possible victim of future security flaw. – Kushagra Karira Jan 25 '19 at 12:21