The biggest are down!!! Hacker with nickname AlpHaNiX attack Google, Gmail, Youtube, Yahoo, Apple etc. All websites are hacked on domain .cd wich belongs to Democratic Republic of Congo. Hacker use strategy so-called DNS cache poisoning.
DNS cache poisoning is a method through which hackers are able to insert malicious and fake records into the cache of DNS servers. As a result, the hackers can then spoof a response to a DNS query, forcing users to go to a phony Web site instead of the real one.
Picture show you how hacker insert fake records into the cache of DNS servers.