Skip to content

The Eclectic Light Company

Macs, painting, and more
Main navigation
  • Downloads
  • M1 & M2 Macs
  • Mac Problems
  • Mac articles
  • Art
  • Macs
  • Painting

WhatsYourSign

How to check an app’s signature

GUI software and the commands you need to get the signature of an app checked thoroughly by macOS, plus a detailed list of error code.

September 17, 2022 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

A primer on code signing errors

What does an error -67030 mean? How does one signing error lead to another? Helpful detail for interpreting results from checking signatures.

June 28, 2019 Macs, Technology

Mojave happily runs apps with revoked signatures, and more

T T Read More

Has your Mac got any old apps and other bundles on it? Have their signing certificates been revoked, or are they perhaps unsigned? Here’s a new app to help you find out.

December 20, 2018 Macs, Technology

A bug in signature-checking weakens most anti-malware tools

One of the basic checks which all malware protection should make is whether apps and other code have […]

February 22, 2018 Macs, Technology

Key security tools for Sierra

T T Read More

Which anti-virus and security products should you use? Here are some recommendations to keep the malware at bay.

April 25, 2017 Macs, Technology

Is crapware now the price of blocking tracking?

T T Read More

Are advertisers now deliberately delivering unwanted crapware to those using ad and tracker blockers?

August 30, 2016 General, Macs, Painting, Technology

Checking signatures with WhatsYourSign

T T Read More

How can you check that an app attached to an email, or one copied from a USB stick, is safe? Here’s a very good answer.

August 12, 2016 Macs, Technology
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, Sparsity, 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
  • Mac Troubleshooting Summary
  • LockRattler: 11.0 Big Sur
  • M1 & M2 Macs
  • Mints: a multifunction utility
  • LockRattler: 12.x Monterey
  • VisualLookUpTest
  • Virtualisation on Apple silicon
  • LockRattler: 13.x Ventura
Secondary navigation
  • Search

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

  • Follow Following
    • The Eclectic Light Company
    • Join 3,183 other followers
    • Already have a WordPress.com account? Log in now.
    • The Eclectic Light Company
    • Customize
    • Follow Following
    • Sign up
    • Log in
    • Report this content
    • View site in Reader
    • Manage subscriptions
    • Collapse this bar