What do you think I should do about Evil Companies copying our Company?

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I obviously Can not name the company, but let’s just say we are kind of a big deal in our field (sorry can’t say what industy).
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T here are some companies (even though they are 1/5, 1/50 or 1/100 of our size) call themselves our competitors.

W henever someone gets fired from our company (usually for being Stupid) those companies hire that person, suck out all the info/secrets and then fire those guys/gals.
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F unny thing is those ex-employees of ours had all singed papers saying “I will not give out company secrets…will not work for a competitor for at least 2 years after I leave this company etc. etc.)

I have mentioned this to my boss multiple times, but he just says let’s concentrate on the positive, let’s not look back, let’s just push forward. I understand this completely, BUT at the same time, we should send some legal papers to those backstabbing/dirty/disloyal ex-employees who betrayed us JUST to scare them. Not sue them or anything. So more people won’t do it.
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A lso, those companies Somehow Secretly Get into our system using False name/info and order our products (since they can’t produce those products themselves) and Resell it to their customers (repackaged) and steal customers from us.

I can do SO MUCH damage to these companies by contacting THEIR CUSTOMERS (mass emails/letters/automated phone massages), and telling them “Hey this company you are ordering from, is actually ordering from us, or SIMPLY just slap a “Thank you for ordering from **********.com” and ship it directly to the consumer.
I have a bunch of scripts running and check manually to catch these FAKE accounts, but they still get in.
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WHAT DO I DO?
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