CGA Fitting Reference. A CGA fitting is the standardized system for the attachment of a compressed gas cylinder to the required regulator or transfer line. Examples of CGA fittings would be CGA-580 for Non-flamable, Non-oxidizing gasses such as Nitrogen, Argon, or Helium. CGA-590 is used for compressed air and CGA-326 is used for Nitrous Oxide.
Google Authenticator is a mobile security application based on two-factor authentication (2FA) that helps to verify user identities before granting them access to websites and services.
Authenticated Users isn't a true groupâit's a special security principal that specifies any session that's been authenticated using some account, such as a local SAM account, domain account, or account from any trusted domain. So Authenticated Users does include the accounts you mention. Microsoft created the Authenticated Users group in response to fears that Anonymous logons could gain access to objects for which Everyone (another special security principal) has access.