Skip to content

The Eclectic Light Company

Macs, painting, and more
Main navigation
  • Downloads
  • Mac problems
  • Art
  • Macs
  • Painting
  • General
  • Life

certificates

macOS has checked app signatures online for over 2 years

Why does it take 2 years to realise that macOS has been checking signing certificate validity online?

November 25, 2020 Macs, Technology

Checks on executable code in Catalina and Big Sur: a first draft

How macOS checks executable code before it’s loaded and run, in macOS 10.15 and 11.0. Covering integrity checks using hashes, and validity of the signing certificate, on Intel and ARM.

November 16, 2020 Macs, Technology

Last Week on My Mac: Making essential services fail-safe

Although most were worried about Apple’s failure to deliver upgrades to Big Sur, the most serious problem left many users unable to launch any apps.

November 15, 2020 Macs, Technology

Code signatures: 3 Fixing signature problems

If you have no other option and can be certain there’s no danger in doing so, you can remove a signed app’s signature. But it may not be so simple.

November 3, 2020 Macs, Technology

Code signatures: 2 How to check them

When macOS won’t let you open an app or other software because it warns that it’s (possibly) malware, here’s how to check the signatures.

October 30, 2020 Macs, Technology

Code signatures: 1 How they work, and stop working

The benefits of code signing for Mac users explained. How certificates are revoked, and what happens when they are. And there’s more to signatures than just the certificate.

October 28, 2020 Macs, Technology

What happened with security updates and HP printer software?

Why many had problems, what they are exactly, what you can do about them, and how they should be prevented.

October 26, 2020 Macs, Technology

How does your Mac know when Apple revokes a developer certificate?

Where does macOS store a list of revoked certificates, and how does it keep them up to date? The answer isn’t perhaps what you expect.

October 16, 2020 Macs, Technology

Last Week on My Mac: Heavy hand on the kill switch

Imagine going to open an app which you use daily, only to be told by macOS that it “will damage your computer” and must be trashed. Can we have confidence in Apple?

August 9, 2020 Macs, Technology

What’s in a macOS installer app? An exploration with ArchiChect

How to check whether a macOS Installer app still has a valid signature, and where to find its hidden Installer packages.

November 26, 2019 Macs, Technology

Posts navigation

Previous1 2 3 4 Next
Blog at WordPress.com.
Footer navigation
  • About & Contact
  • Macs
  • Painting
  • Language
  • Tech
  • Life
  • General
  • Downloads
  • Mac problem-solving
  • Extended attributes (xattrs)
  • Painting topics
  • Hieronymus Bosch
  • English language
  • LockRattler: 10.12 Sierra
  • LockRattler: 10.13 High Sierra
  • LockRattler: 10.11 El Capitan
  • Updates: El Capitan
  • Updates: Sierra, High Sierra, Mojave, Catalina, Big Sur
  • LockRattler: 10.14 Mojave
  • SilentKnight, silnite, LockRattler, SystHist & Scrub
  • DelightEd & Podofyllin
  • xattred, Metamer, Sandstrip & xattr tools
  • 32-bitCheck & ArchiChect
  • T2M2, Ulbow, Consolation and log utilities
  • Cirrus & Bailiff
  • Taccy, Signet, Precize, Alifix, UTIutility, alisma
  • Revisionist & DeepTools
  • Text Utilities: Nalaprop, Dystextia and others
  • PDF
  • Keychains & Permissions
  • LockRattler: 10.15 Catalina
  • Updates
  • Spundle, Cormorant, Stibium, Dintch, Fintch and cintch
  • Long Reads
  • LockRattler: 11.0 Big Sur
  • Mac Troubleshooting Summary
Secondary navigation
  • Search

Begin typing your search above and press return to search. Press Esc to cancel.

Cancel