( See our slideshow on how DNS cache poisoning works, and what can be done to prevent attacks ) With cache poisoning an attacker attempts to insert a fake address record for an Internet domain ...

The Domain Name System (DNS) is a key web technology, effecting everything from speed to privacy to whether you can access Netflix. But what is it and how does it work?

It's worth remembering that each level of CNAME necessitates another DNS lookup—in this case, a remote machine that asked to resolve www.example.tld would be told "please look up example.tld. in ...

This is how normal DNS works, too. However, DoH takes the DNS query and sends it to a DoH-compatible DNS server (resolver) via an encrypted HTTPS connection on port 443, rather than plaintext on ...