Learn / Reference
Reference
An A-Z security glossary in plain English and a tickable security checkup you can work through at your own pace.
Bookmark this section. The glossary explains the jargon you meet in news stories and breach letters, and the checkup turns every guide on this site into a short list of things to do.
Look it upCybersecurity glossaryOver 90 security terms explained in one plain-English sentence each, from 2FA and APT to zero trust and zero-day.Look it upPersonal security checkupA tickable checklist that turns every guide on this site into small actions. Your progress is saved in your browser, so you can work through it over a few evenings.