Accounts
What an SSH Key Is and When You Actually Need One
SSH keys replace a password with a key pair your computer holds. What they do, why your host asked for one, and why most people never need to make one.
7 min read
Explainer
6 guides tagged “Explainer”.
Security
Is Public Wi-Fi Still Dangerous in 2026
The advice everyone repeats describes a web that stopped existing a decade ago. Here is what public Wi-Fi can and cannot expose now that HTTPS is universal.
8 min read
Security
What a Firewall Does, and What It Does Not
A firewall filters connections by port and program. It cannot tell a good download from a bad one, which is why it is only part of the picture.
7 min read
Security
What Is Social Engineering and How to Spot It
Social engineering attacks the person, not the software. Learn the four pressure patterns behind nearly every version, and the one rule that defeats them.
8 min read
Security
What Is a Botnet and How Devices End Up in One
A botnet is thousands of ordinary devices quietly taking orders from a stranger. Here is how yours would join, and the handful of checks that matter.
8 min read
Security
What Is a Man-in-the-Middle Attack, in Plain English
Someone sits between you and the site you think you are talking to. Here is what that actually requires, and why HTTPS made most versions of it fail.
8 min read