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BehaviourService

Last Week on My Mac: Bugs of wonder

Why should an app start crashing on launch in macOS 26.4 beta 2? Why does its firmware version number make no sense? And how did it take 6 months to fix six typos?

March 1, 2026 Macs, Technology

XProtect ascendant: macOS security in 2024

After setting a record of 29 updates through the year, XProtect’s Yara rules have grown from about 195 in 167 KB of text to 328 in 921 KB. Here are other details for the other XProtects, Gatekeeper and more.

December 27, 2024 Macs, Technology

What do XProtect BehaviourService and Bastion rules do?

Introduced in macOS Ventura, these monitor for potentially malicious behaviours, according to 12 Bastion rules. Detections are recorded in its local database and reported to Apple as security intelligence.

June 28, 2024 Macs, Technology

The Three XProtects of Christmas

What you need to know about the 3 XProtects: classic, Remediator and BehaviourService, and full details of what we know about XPR 122.

December 23, 2023 Macs, Technology

Is macOS’s new XProtect behavioural security preparing to go live?

Apple released its first update to its new behavioural security protection in XProtect Behaviour Service on 8 August, and again on 1 September. Here are the details.

September 4, 2023 Macs, Technology
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