Glossary
SSO (single sign-on)
Logging in once to access several applications, without re-entering your credentials each time.
SSO lets you authenticate once, then access several services without logging in again. It is more convenient and it centralises access control. In return, this single account becomes highly sensitive: it absolutely must be protected by strong two-factor authentication, because hacking it would open every door at once.
See also
Least privilegeGiving each person only the rights strictly necessary for their work, no more, no less.Patch managementDeploying security updates on time to close known flaws.CVE / CVSSThe CVE gives a unique number to each known flaw; the CVSS gives it a severity score.BotnetA network of hacked machines, controlled remotely to carry out mass attacks.