Mastering Linux Security and Hardening - Second Edition

Keeping the Linux systems updated

Spend some time perusing the Common Vulnerabilities and Exposures database, and you'll soon see why it's so important to keep your systems updated. Yes, indeed, you'll even find that there have been security flaws with our beloved Linux, as shown in the following screenshot:

Updating a Linux system only requires one or two simple commands, and it's generally faster and less painful than updating a Windows system. 

You can find the Common Vulnerabilities and Exposures database here: https://cve.mitre.org/. All of you conscientious, dedicated Linux administrators will definitely want to become familiar with ...