Security glossary
Plain-English definitions of important security and privacy terms.
The form has a hard limit when every second factor is gone.
Both help verification, but they are not interchangeable.
Consistency can help Google recognize a legitimate owner.
Registration must happen before the original key is lost.
Blocking an alias from sign-in is not deleting its mailbox.
Device labels and Wi-Fi addresses need context.
A successful reboot is not proof that a patch installed.
Choosing a resolver and encrypting queries solve different problems.
A hotel login page controls access but does not validate every site.
Button or PIN enrollment can stay active when you do not use it.
More iCloud categories gain end-to-end protection, with a trade-off.
A chosen person can assist without knowing your password.
The correct response to a specific sophisticated targeting concern.
A profile may configure several settings and can remove them together.
One marks and secures a missing device; the other blocks reactivation.
Privacy depends on its lock, account choice and data handling.
A dormant app can lose grants and notifications without being deleted.
See which app used a sensor without inferring what it captured.
One suggests movement with you; the other checks nearby devices now.
Check when a device was seen before acting on its map pin.