http://www.perlmonks.org?node_id=810689


in reply to Questions: how to exclude substring having Evil meanings

This sounds like an impossible and petty set of requirements. Isn't the remote chance of these evil codes part of the fun? I think if I were developing and my boss made such a stringent requirement- I must be a poor employee- 'cause I think I'd throw a fit and cry like chimp on coke.

I mean... 5m records.. this sounds like some serious work.