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PDF without Adobe: 23 The nightmare of forms

Just fill in this form – then the problems start. They look fine in Preview or another app, but don’t work right. Here’s why.

June 18, 2019 General, Macs, Technology

Last Week on My Mac: Making notarization as hard as possible

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Preparing software for distribution shouldn’t be harder than writing the code in the first place.

June 16, 2019 Macs, Technology

Will my app/tool/extension run on Catalina?

Confused as to what will and won’t run on macOS 10.15 Catalina? Here’s a clear guide for users from regular to advanced.

June 15, 2019 Macs, Technology

Building and delivering command tools for Catalina

It took 5 apps, 4 command tools in 6 commands, 2 developer certificates and an app-specific password for 260 lines of code.

June 13, 2019 Macs, Technology

Grokking Gatekeeper in Catalina

Important changes for anyone distributing command tools in particular, and a good time to ensure you only ship signed and notarized apps if possible.

June 12, 2019 Macs, Technology

Signet release 1.0: Check app signatures in bulk

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Crawls selected folders checking all app signatures. Reports all signatures which have problems, including unsigned apps.

May 28, 2019 Macs, Technology

When does Mojave check an app’s signature? The answer isn’t entirely consistent

App signatures are only checked on app first run – it may once have been true, but is no longer accurate. But can you bypass those additional checks? Is this a vulnerability?

May 13, 2019 Macs, Technology

Checking your app’s own signature

How can an app check that nothing has nobbled it? How to use its code signature to perform a simple launch test.

May 11, 2019 Macs, Technology

PDF without Adobe: 12 Vulnerabilities in digital signing

Do you use digital signatures in PDF documents, or do you trust your PDF reader to check them? You could be spoofed into trusting forgeries.

February 28, 2019 Macs, Technology

PDF without Adobe: 8 Security, integrity and forensics

Can you get malware in PDF? How far can you trust a PDF, or could it be a forgery? How to sign PDFs, and what data may remain hidden inside them.

February 19, 2019 General, Language, Macs, Technology

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