How to Find Academic Online Cheaters, Patent Pirates, and Corruption

It seems that DARPA is working on a way to find insider threats, and this makes sense because generally it is the insiders who are exploited for information by spies, corporate espionage agents, and/or criminals. School teachers and professors are trying to figure out ways to prevent students from plagiarizing online work, and cheating in the classroom.

It's a never ending battle, and it is amazing how resourceful some of these students can be.

If they would use that brain power to do something useful in the world, they can probably become quite successful without any degree from college at all.
There was an interesting article recently piece on SlashDot not too long ago which noted that those who cheat in Online Games tend to congregate together, and when one of their friends starts cheating, all of the friends tend to start cheating, and the piece cited a couple of real research reports on the issue, showing the cheating grew like an infectious virus. Wow, that is interesting. In particularly, the posting at SlashDot cited a December 21, 2011 Cornell University Study; "Cheaters in the Steam Community Gaming Social Network," as an example.
Now then, I guess none of us are too readily surprised by this, and yet, I'd say this information can easily be extrapolated and pit against other sectors and should be cross-pollinated in areas such as accounting malfeasance, corporate corruption, bribery in Congress, patent pirating, insider threats, etc. In other words, let's find those who are cheating and then go find out and check out all of their friends are, their real friends, not just their Facebook "friendlies" and then perhaps we can stop this problem of cheating in all of society? Okay so, here's the question; is it ethical for us to take a look at everyone's friends online to see who is ethical and who is not, and then connect the dots from there? Does it make sense to prosecute one individual in the crowd who appears to be the instigator, or has the most number of friends to make an example? Many would say that is unfair prosecution, and yet it would solve the problem of cheating.
It would be akin to taking bad apples out of an apple barrel, so the rest of the apples don't rot.

This is a philosophical conundrum, and perhaps this suggestion goes against the basic principles of freedom and liberty, and equal justice under the law.
Americans don't take too kindly to selective persecution. However, those in any form of authority whether it's a business, organized religion, classroom, or government agency also realize that sometimes you have to make an example out of a bad seed to keep everyone else honest. If those folks being monitored are closely scrutinizing their friends, they are likely to have fewer friends, and do more due diligence with the friends they have so that they themselves are not labeled as insider threats, criminals, and/or cheaters.
In many regards this could cause fewer interactions and less communication online, it would quell the voice and the reasoning behind social networking, and slow the flow of information.
That would be bad. However it would be good to stop the cheating, and the lack of integrity that we see online. The problem is the more people who cheat, the more infectious it is, and the more who pile on.

In many regards this is the same as the broken window theory, and I am merely suggesting a philosophical solution, but I won't go so far as to give recommendations as to how to go about it.
I'm still thinking on this, and I ask that you please consider what I've said.