Articles I've written
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 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.
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?
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?
ERR_SPDY_PROTOCOL_ERROR, and an invalid HTTP header
When migrating your site to a more performant HTTP/2 protocol, it may happen that Chrome will not load a page and will display This site can’t be reached with
ERR_SPDY_PROTOCOL_ERROR instead. HTTP/2 is derived from the earlier SPDY protocol, that's probably why the error message doesn't mention HTTP/2 at all.