Articles I've written

Disable TLS 1.0 & 1.1 today
October 16, 2018 (updated March 23, 2021)

Microsoft, Google, Apple & Mozilla announced yesterday that they're removing TLS 1.0 and TLS 1.1 protocols from Internet Explorer, Edge, Chrome, Safari & Firefox browsers in the beginning middle of 2020. Your visitors most probably don't use them already so you can disable them in your server configs today. But let's verify that first using the “Handshake Simulation” tool available in the SSL Labs Server Test.

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Browsers are hiding the padlock and it's a Good Thing™
October 15, 2018 (updated October 21, 2023)

Magical properties are often attributed to the padlock icon 🔒 which marks “secure” pages. For example, you'll often hear that the icon indicates trustworthy websites that won't abuse your data and passwords. The padlock is gradually being removed and that's a Good Thing™. But why?

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Not secure: Chrome and HTTP websites
July 25, 2018 (updated September 13, 2023)

Chrome started marking all HTTP websites as Not secure yesterday (on my birthday, what a gift!) with their release of Chrome 68. The treatment is not a red warning yet, just a gray (i). And there's a lot of busy czech websites getting that treatment. And how did we get here anyway and what's next?

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Do you need a TLS/SSL certificate for your website?
August 10, 2017

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