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Last Week on My Mac: Checking code can take longer now

Stepping through the stages in security checks made on a notarized Mach-O binary command tool, in Ventura 13.4.1 2 years ago, and now in Sequoia 15.4.1.

May 4, 2025 Macs, Technology

Why some apps sometimes launch extremely slowly

Most could live with slight delays when launching major apps. But when they’re as long as 30 seconds, and it’s an Apple silicon Mac, an explanation is required.

April 30, 2025 Macs, Technology

How checking hashes can slow your Mac

SHA-256 hashes are used in code signatures and security as a means of identification and verification. They bring a substantial computational burden, and can be very slow in some Intel Macs. Plus a new version of Dintch for integrity checks.

April 28, 2025 Macs, Technology, Updates

Last Week on My Mac: Gone to launch

Why can apps take many seconds or even minutes to launch on some Macs? More results to puzzle and perplex, and a strategy to address the problem.

April 27, 2025 Macs, Technology

Why some apps launch very slowly

Opening Pages can take several seconds, and other apps can hang around for 30 seconds before they’re ready to use. Is it XProtect, online certificate checks, or what?

April 22, 2025 Macs, Technology

Last Week on My Mac: Layered security and herd immunity

Security in macOS is designed and applied in multiple layers to remain effective even when one layer is bypassed, and herd protection determines types of attack.

August 25, 2024 Macs, Technology

Where to find Gatekeeper?

What and where is the Gatekeeper app or service? The answer is that it’s a collaborative system or technology to check apps and ensure that only trusted software is run.

September 28, 2022 Macs, Technology

App security changes coming in Ventura

Is macOS going to be like iOS? Not in Ventura, where notarization is improved with additional security checks. Here are the details.

June 17, 2022 Macs, Technology

What could possibly go wrong on an app first run?

T T Read More

App translocation, signature checks, XProtect and more explained, with key messages from the log to help you diagnose problems.

January 27, 2020 Macs, Technology

How Catalina handles app first run

How have checks of notarization changed what happens when you open a quarantined app in Catalina? What does XProtect do?

October 10, 2019 Macs, Technology

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