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MRT

Inside XProtect Remediator, and how it could save us from disaster

Six years ago, the old MRT saved millions of Macs from coming under attack. XPR could one day do the same. A new deep dive into its function has just been presented at Black Hat. Also updates on status_code 30 and missed scans.

August 11, 2025 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

What security updates does my macOS get?

Which versions of macOS get which types of security update, which have protection from XProtect Remediator, and can you still rely on Safari?

October 20, 2023 Macs, Technology

Malware detection and remediation by XProtect Remediator

In June 2022, Apple retired MRT and replaced it with XProtect Remediator. Here’s all you need to know about this new tool and what it does.

June 12, 2023 Macs, Technology

macOS and security updates in detail

Major macOS releases from Sierra to Ventura, with full details of each release and security update. Also updates to XProtect, MRT and Gatekeeper.

May 8, 2023 Macs, Technology

What are those XProtects?

Run Catalina or later and there are two XProtects in the CoreServices folder. But they’re completely different, as this explains.

February 25, 2023 Macs, Technology

Everything you need to know about XProtect’s malware protection

All about XProtect, and its new sibling XProtect Remediator, which macOS they come with, what they do, and how to check them and keep them up to date.

November 1, 2022 Macs, Technology

Last Week on My Mac: Time for a fresh SilentKnight

T T Read More

Developed from LockRattler three years ago, SilentKnight is in need to modernisation to work better with changing security tools. History and aims.

October 9, 2022 Macs, Technology

SnowDrift warnings: are they malware?

Two readers reported odd warnings when checking macOS malware scans. Are they significant, or errors? And what are the differences between XProtect and XProtect.app?

September 19, 2022 Macs, Technology

Interpreting XProCheck’s results and problems

What if you see no scans at all? Or just ‘private’ results? What should make you concerned, and what’s normal?

September 16, 2022 Macs, Technology

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