Gatekeeper (classic Mac OS)

Gatekeeper (formerly GateKeeper) was an anti-virus utility for classic Mac OS. It was written by Chris W. Johnson and stored at the Computation Center's Macintosh software archive. Other than name and function, it has no relationship to the modern macOS security feature bearing the same name.

Description
The software is installed as two extensions: Gatekeeper and Gatekeeper Aid, which are managed by a control panel named Gatekeeper Controls.

Release history

 * Gatekeeper 1.3 (November 1993) is the final release.
 * Gatekeeper 1.2.8 (August 1993)
 * Gatekeeper 1.2.7 (January 1993)
 * Gatekeeper 1.1.1 / Gatekeeper Aid 1.1 (November 1990)
 * GateKeeper 1.0 (January 1989)