How to Remove China CNNIC Root CA from Debian | Google removed the CNNIC Root CA from all Google products. For security, this CA should also be removed from your Debian stash of trusted Root CAs.
Block Geo-Region List of IPs with ufw in Linux | Say for instance you wish to block IP ranges by region such as blocking China. This is easy to do with one spiffy website and ufw in Ubuntu or other Linux distros. I’ll show you how!
Beware of Scam Emails about China Domain Name Registration Service | If you get an email from a random Chinese company asking for authorization about registering a similar domain name as yours, it’s a scam. They are simply waiting for you to respond and then will attempt to force you to register domains with them. The best thing is to just ignore and delete any such emails!