Безопасен ли mana.pf?

They cache Dns, many times their clients cannot see some websites online because they are pointing them to old IPs, instead of updating Dns frequently. This is very dangerous because, imagine someone wanting to log in inside a website that should be located at the A Computer that has the adress www.aaa.tld and at the Dynamic IP 123456, and instead he falls in another web server that accept the www.aaa.tld (since is a catch all singlar web), but with a different IP 223344, a non experimented person will think this is the web site she wants, and then they log in (sending private info to another computer).