On 30 September, one of the largest providers of HTTPS certificates, Let’s Encrpyt, stopped using an old root certificate — which is not something you get after a hook up — and millions of devices and sites could be affected as they all rely on the company for secure internet connection.
Older MacBooks and iPhones are at risk, as well as consoles like the PlayStation 3 and Nintendo 3DS, some older smart TVs and set-top boxes. Basically, anything that requires a secure connection to a particular server could stop working.
Streaming platforms like Netflix, Stan and Binge require devices accessing their services to have a secure connection and it might also affect websites requiring secure login like emails and banks.