Comodo antivirus not updating 2016
The bank site gives you a different number every time.
This is done with the help of a random number generator which will give you random numbers for input.
I have seen most of the multinational corp and govt.
sect using Trend Micro for protection while I was working there. Unless you are planing to get security for a big intranet setup for your routers and networks to save access to some govt.
And with so many decent free options available, the choices have never been wider.