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TLS

Explainer: TLS, VPN and Private Relay

Unscramble what HTTPS, SSL, TLS, VPNs and Apple’s Private Relay do, and how they could be used to protect you.

March 5, 2022 Macs, Technology

How to deal with a site with a broken certificate

T T Read More

What to do when your browser complains that a website you want to visit has a problem with its certificate security.

October 30, 2021 General, Macs, Technology

How Safari 15 checks a secure connection

A detailed walk through the log shows Safari 15 checking Safe Browsing, phishing sites using ML, and performing trust evaluation of certificates.

October 4, 2021 Macs, Technology

Explainer: Security certificates

Why do we keep having problems with security certificates when they’re just supposed to work? A look at what they do, and they work.

October 2, 2021 Macs, Technology

Why won’t Safari open that web page?

Did you think it was only old Mac OS X affected by the Let’s Encrypt certificate expiry problem? No, it’s Safari wherever you can use it. Here’s how to deal with it.

October 1, 2021 General, Macs, Technology

Explainer: checksums, CRCs, hashes and cryptography

What are checksums, CRCs and hashes? What is required for a hash to be cryptographic, and how any of these affect your Mac? Some answers and explanations.

July 10, 2021 Macs, Technology

High Sierra’s Small Print: installation, firmware updates, Content Caching, and more

Additional info about how you can install and upgrade to High Sierra, its new Content Caching feature, how it changes firmware updates, changes to NVRAM, and more.

September 13, 2017 Macs, Technology

Secure web connections under threat

With new vulnerabilities to be disclosed in secure web (HTTPS) connections, could these be officially exploited in UK government snooping?

July 28, 2016 Macs, Technology

Last week on my Mac: who remembers HyperCard, and a ban on encryption?

HyperCard was revolutionary, but we now have much better. The UK government is set to clash with Apple and others over encryption.

July 17, 2016 General, Macs, Technology

The TLS mess in OS X El Capitan

With OpenSSL 0.9.8zh and 1.0.2d and LibreSSL 2.1.8, El Capitan is an out-of-date mess, and needs tidying for the sake of security.

March 23, 2016 Macs, Technology

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