Logging in as the root user should never be done on Linux. Using the root account could lead to disaster. Sudo is the preferred method of gaining elevated privileges. When I first started using Linux ...

A vulnerability in the Linux sudo command has been discovered that could allow unprivileged users to execute commands as root. Thankfully, this vulnerability only works in non-standard configurations ...

Of all the Linux commands, rm is notorious. It's easy to completely wipe out your system with one mislaid rm command as root.

A major vulnerability impacting a large chunk of the Linux ecosystem has been patched today in Sudo, an app that allows admins to delegate limited root access to other users. For the technical details ...

There was a time when, to use a computer, you merely turned it on and were greeted by a command prompt. Nowadays, most operating systems offer a security model with multiple users. Typically, the ...

A new Linux NetFilter kernel flaw has been discovered, allowing unprivileged local users to escalate their privileges to root level, allowing complete control over a system. The CVE-2023-32233 ...

Attackers can now gain root privileges on millions of Linux systems — by exploiting an easy-to-exploit, newly discovered buffer overflow flaw in a common library used on most major distributions of ...

In the Linux Journal article “Implementing Encrypted Home Directories” (August 2003), I described how to encrypt home directories transparently. This article describes how to implement another ...