Talk:Intensify/@comment-3308668-20130617212437/@comment-58.6.219.211-20130626091642

Don't know who told you where to find it but the easiest way to get it is to do INFESTED defense missions (Palus or Xini are good) but its still down to your own luck.

http://www.reddit.com/r/Warframe/comments/1fwen5/defense_rewards_updated/

This has all the defense rewards and their relative chances of dropping. If you read it fully you'll understand how to properly farm for specific mods.