While crime-sourcing has allowed organized crime groups to commit
more crimes with less risk, law enforcement officials are now leveraging
the power of crowdsourcing to fight crime as well.
The NYPD has
already launched a
social media unit to track criminals on Facebook and Twitter. More
recently, as the streets of the UK burned in the aftermath of violent
protests, citizens of London
banded together online to identify looters.

In
one of the most impressive uses of “investigation-sourcing” to date,
the Canadian public came together to identify the thousands of
protesters who caused millions of dollars of damage as a result of the
Vancouver Canucks losing the NHL championship in June 2011. Using a
variety of image processing techniques,
the firm Gigapixel was able to assemble 216 publicly submitted photographs and
assemble them into one seamless high-resolution image. The phenomenal
resolution of the resultant picture allowed the faces of tens of
thousands of riot participants to be viewed in high resolution. The
identification of more than 10,000 participants by name was
completed by tagging individuals in Facebook, breaking a record for the
number of tags in a given image to date. Many of those identified in
the photos have now been successfully arrested and prosecuted by
Canadian authorities.
http://www.futurecrimes.com/article/from-crowdsourcing-to-crime-sourcing-the-rise-of-distributed-criminality/
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