KnockKnock
Universal version latest seen at v4.0.3 · Reported by 78 Macs in the community.
All sighted native versions (9):
Sighting data is community-sourced — version availability and pricing should be verified with the developer.
KnockKnock is a free security utility from Objective-See that scans your Mac for potentially unwanted or malicious software. It performs deep system inspection to detect persistence mechanisms, rootkits, trojans, and adware that other antivirus tools might miss. The app runs locally without requiring an internet connection and presents its findings in a clear, user-friendly interface. It is widely used by security-conscious Mac users, IT professionals, and incident responders who want visibility into what is actually running on their system.
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1 suggestionKnockKnock is maintained by Objective-See, a respected macOS security research organisation. However, we could not confirm whether a native Apple Silicon build exists — the search results indicate testing had not been completed as of late 2020. Since Rosetta 2 will be removed in macOS 28 (September 2028), it is important to verify native support sooner rather than later. Contact Objective-See directly through their website to ask about Apple Silicon compatibility and whether a native build is planned. In the meantime, KnockKnock continues to run under Rosetta on M-series Macs, but you should plan a transition before the September 2028 deadline. As a complementary security tool with confirmed Apple Silicon support, consider also running Malwarebytes, which offers free and premium scanning alongside real-time protection and is actively maintained with native M-series builds.
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