I'm on Ubuntu 15.04 and today I've been reading an article about Linux security from this link.
Everything went good until the part of UID 0 Account
Only root should have the UID 0. Another account with that UID is often synonymous to backdoor.
When running the command they gave me, I found out there were another root account. Just after that I disabled the account as the article do but I'm sort of afraid of this account, I can find him on
I tried to delete this account using
userdel rootk but got this error ;
userdel: user rootk is currently used by process 1
The process 1 is systemd. Could anyone give me some advice please ? Should I
userdel -f ? Is this account a normal root account ?