Is SpeedMaster Pro - video and game speed booster safe?

SpeedMaster Pro lets any page message its frame script to modify timing APIs inside embedded cross-origin frames.

The extension injects a main-world script into every HTTP, HTTPS, and file frame at document start. That script accepts SpeedMaster postMessage commands without checking the sender origin, so an embedding page can trigger speed and timing hooks in a cross-origin child frame and can request basic hook-state details from it.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.