You can always do a little more.
https://www.howtogeek.com/easy-tasks-to-improve-the-security-of-your-linux-computer/?utm_source=dlvr.it&utm_medium=blogger
https://www.howtogeek.com/easy-tasks-to-improve-the-security-of-your-linux-computer/?utm_source=dlvr.it&utm_medium=blogger