Abstract: I welcome you to the fourth issue of the IEEE Communications Surveys and Tutorials in 2021. This issue includes 23 papers covering different aspects of communication networks. In particular, ...

We may earn commission from links on this page, but we only recommend products we love. Promise. Listen, I’ll be the first person to tell you that homemade face masks can be a little questionable.

Hackers are actively exploiting a critical vulnerability (CVE-2025-32463) in the sudo package that enables the execution of commands with root-level privileges on Linux operating systems. The U.S.

Git isn’t hard to learn. Moreover, with a Git GUI such as Atlassian’s Sourcetree, and a SaaS code repository such as Bitbucket, mastery of the industry’s most powerful version control tools is within ...

Windows 11 is available for download worldwide. Microsoft has released it as a free upgrade, which means you do not need to pay to upgrade your computer to Windows 11. It is available for free ...

Synthetic Aperture Radar (SAR) has been widely used for Earth remote sensing for more than 30 years. It provides high-resolution, day-and-night and weather-independent images for a multitude of ...

In late June 2025, security researcher Rich Mirch of Stratascale disclosed a critical vulnerability in sudo, the Linux utility used to run commands with elevated privileges. Tracked as CVE‑2025‑32463 ...

Two flaws, one undetected for over a decade, allow unintended root access on Ubuntu and Debian systems, prompting urgent patching across enterprise environments. Two new vulnerabilities have been ...

There is a critical security flaw in the Linux tool "sudo" and makes unprivileged users "root", the system administrator, in no time at all. The reason for the malaise: a bug in the chroot function of ...

When you create a chroot environment, it doesn’t have access to the host system’s /dev directory by default. This can cause errors when running commands like apt update because programs need access to ...

mmdebstrap is a tool that helps you create minimal Debian-based system images (root filesystems). Think of it as a way to build a tiny version of a Linux system from scratch. It’s like a Lego kit for ...

If you’re completely new to Microsoft Word, you’re probably wondering where to begin. You’ve come to the right place because we’ll get you started. From what you see in the Word window to how to save ...