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I wish there were a simple way to communicate how large and widespread CP is, and how much law enforcement could use your smarts to go after these guys.

There are more households sharing CP in your community than there are bus stops. (We can roughly map IPs of known CP files advertised over torrent networks.)

There are too few innovators in this space because specifics on CP networks are privy to law enforcement, and investigators are often patrol cops who get promoted into a child crimes unit.

It's fine (and true) to say these technologies are used for many more things than CP, but that's not an excuse to turn a blind eye to it, anymore than Craigslist does to child exploitation.



> There are too few innovators in this space

I don't know much about US law, but in my country it's illegal to even look at an image, even if it is part of a private investigation.

I'm sure that many would volunteer to help, but not while they'd risk jail time themselves


There's plenty that can be done that never involves having to look at an image yourself.

For instance, if I gave you a specific file name/size/hash (but not showing you the actual image), could you find out who possesses it, is distributing it, and anything about their location or identity that would aid law enforcement in catching the bandit?


I see what you're saying, but doesn't somebody, somewhere have to look at it to make sure it is CP first?


I strongly suspect that anti-CP laws have an exemption for people engaged in law enforcement and the judicial system engaged in real investigations. Otherwise it would be impossible for anyone to be prosecuted for CP. The law makers aren't thad silly.


You are correct. Law enforcement involved in these investigations absolutely looks at CP. If they confiscate a computer with 10,000 CP images, they're looking at every one, day in and day out, and putting together a case for the prosecution. I'm glad that's not my job, and thankful for those whose it is.


> There are more households sharing CP in your community than there are bus stops.

Sorry if I'm wrong, but I find that hard to believe. Any amount of CP is a problem IMO, but I don't think it's that bad. In my metropolitan area there's around 1,671,683 people, and I'd be surprised to learn there's 1000 honest-to-god pedos.


I live in a metropolitan area of around 500,000 and there are close to 200 markers indicating an IP address that's advertising CP availability.

We have methods of rating each marker (e.g. how many CP files, how many are teen, child, nudity vs. intercourse, etc). Of those 200, there are a handful of the worst offenders that law enforcement will use resources to pursue, a group in the middle that have downloaded a large number where victims are 12-18, and then those who have just a few random files from the known list.

Does that help?


<markers indicating an IP address that's advertising CP availability.>

Sorry if this is a dumb question, but what does that mean? There are 200 servers with that stuff in your city? If you know their IP can't you get a warrant and shut them down? I find it strange that the police know about so many people doing this stuff but don't do anything about it but maybe that's not what you mean? It seems pretty cut and dry if someone is advertising illegal stuff.


Yes they can get a warrant, and they do, but there's honestly so much of it out there that there's only so many hours in a day for investigators to subpoena information, arrest someone, do forensics on their computer, prosecute the suspect, etc etc. Far less serious offense, but it's similar to how the RIAA/MPAA can only go after so many music/movie pirates out there.


How do you avoid prosecution? Being in possession of child pornography is a crime. If you personally identified these torrents, then you are essentially confessing.

There is an interesting story in "Three Felonies a Day" where an employer discovers child pornography on an employee's computer. They contact their attorney, and the lawyer deletes the offending contact to protect the company. He then alerts authorities to the employee. The attorney is eventual prosecuted for evidence tampering. It's an absurd Catch 22.


After re-reading: you avoid prosecution by not being a large enough offender, or by offending in a jurisdiction where law enforcement is not trained to catch you. Not all that different than avoiding prosecution as a recreational drug user when the cops are too busy going after bigger fish.

There's a lot of time and resources spent in between the time of identifying that an IP address is broadcasting CP to having all the information you need to bust down the right door and lock up the guy for a long time.


Taking your example of image analysis, companies in this space will build applications that - for instance - identify which images of the 10,000 on a bandit's computer are all the same kid. The software company would use sample images of clothed kids to demonstrate how it works, then only law enforcement would input confiscated CP images to do the analysis.


I meant how do you avoid prosecution when analyzing these images for the purpose of catching the people spreading them? There is no "fair use" for contraband. Therefore, it would be hard to build a company around technology for stopping child pornography.


Example of what private companies can do - http://www.huffingtonpost.com/2011/05/20/facebook-photodna-m...


That doesn't sound like a Catch 22, that sounds like someone interfering with evidence. The absurd thing is if the company or lawyer would be prosecuted for not deleting the evidence. I'd hope not, cause they didn't do anything wrong if their employee did the wrong thing.


I did/do not personally identify them. I describe that law enforcement has tools to do so, but limited resources (and difficulties with ISP cooperation) to go after all of them.


Where are you getting this data from?


Privileged law enforcement information. Sorry but I cannot say more.


Can I ask how one gets into that gig?


Professionally? Contact your Sheriff's Office and ask to speak with someone from their internet crimes or child crimes/exploitation unit. They're always looking for talented people in those areas.


Does anyone have references to studies or data? I tried looking once, but couldn't even find a proper definition.




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