OS X and macOS make it very easy for malware to make itself persistent. It’s time for High Sierra to improve protection of the user.
LaunchAgents
Background activities scheduled by third-party software currently use launchd, and run the risk of affecting the user. Would GCD be a better choice of dispatcher?
Schedule a periodic task as a Launch Agent. How close to the expected time does macOS actually run it?
The Eclectic Light Company 