Security glossary

Plain-English definitions of important security and privacy terms.

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A request for extra money is not automatically part of the original checkout.
The message is a claim; the account record is the first transaction check.
Removing a login key does not automatically undo everything a device saw.
A purchase is not a personal transfer just because a seller wants lower fees.
A meeting URL and a software installer require different verification.
A code permits an attempt; a host-controlled room screens admission.
One handles an event; the other can affect future contact across Google.
Availability can be shared without exposing names, places and descriptions.