Unfortunately, SNMPv2 is not secure

You betcha its not!

There are GOOD practices for deploying SNMP.
The BEST practice is to avoid V2.
If you must SNMP then use v3
or http://www.tcpipguide.com/free/t_SNMPVersion3SNMPv3MessageFormat.htm
if you are feeling geekish.

However my personal view is DON’T DO IT.
Continue reading Unfortunately, SNMPv2 is not secure