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sandbox

Last Week on My Mac: Deceived by the Finder

Where does Apple warn the user that four stray files in an unprotected folder are specially protected by the Sandbox kernel extension?

March 8, 2020 Macs, Technology

Quarantine, SIP, and MACL: macOS per-file security controls

The behaviour of quarantine flags, SIP flags, and the mysterious new com.apple.macl attribute, which never ceases to puzzle.

January 30, 2020 Macs, Technology

Last Week on My Mac: Catalina users caught in a game of chance

T T Read More

When it comes to basics, we like consistency. Imagine what life would be like if every so often […]

January 5, 2020 Macs, Technology

Last Week on My Mac: Welcome to the managed environment?

It’s not very often that we see the birth of a whole new subsystem both in macOS and iOS, but RunningBoard is brand new with 10.15 and 13.

November 10, 2019 Macs, Technology

Hardened runtime, sandboxing and XPC services

Jeff Johnson of @lapcatsoftware has just published an excellent technical article looking at controversial issues over hardening, sandboxing, […]

November 7, 2019 Macs, Technology

Damaged apps can run normally: signature checks are complex

Signature checks are complex. On first run with a quarantine flag, they include the contents of the Resources folder, but seldom do after that.

June 24, 2019 Macs, Technology

Investigating Time Machine errors with T2M2 and Consolation 3

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How to detect and investigate a problem with Time Machine backups in Mojave, using only free tools.

May 21, 2019 Macs, Technology

🎗 Quarantine: Documents

Second of two, here looking at quarantine of documents, what it means, how it occurs. Much more common than apps, but mysterious.

April 26, 2019 Macs, Technology, xattr

🎗 Quarantine: Apps

First of two articles – this looking at how quarantine works for apps and other executables, details of the flag itself, how it behaves, and more.

April 25, 2019 Macs, Technology

Sandstrip removes spurious quarantine flags

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A simple utility to remove the many quarantine flags which are written when sandboxed apps open movies, PDF, JPEG and other files, and can cause problems.

April 22, 2019 Macs, Technology

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