1. ATF (Bureau of Alcohol, Tobacco, Firearms and Explosives) 2014 National integrated ballistic information network ( NIBIN ) fact sheet https://www.atf.gov/file/11171/download
2. AT&T 2014 AT &T introduces sponsored data for mobile data subscribers and businesses http://www.att.com/gen/pressroom?pid=25183&cdvn=news&newsarticleid=37366&mapcode=
3. Bartlett , J. Miller , C. Crump , J. Middleton , L. 2013 Policing in an information age http://www.demos.co.uk/files/DEMOS_Policing_in_an_Information_Age_v1.pdf?1364295365
4. Bender , B. 2013 Cellphone firms regularly give data to law enforcement: Big providers give authorities records of calls, locations The Boston Globe http://www.bostonglobe.com/news/nation/2013/12/09/new-figures-show-growth-law-enforcement-requests-for-cellphone-data/9o1TZ1xz5VUBButjteO1jL/story.html
5. Boone , J. 2013 Criminal use of social media (2013) http://www.nw3c.org/docs/whitepapers/criminal-use-of-social-media.pdf?sfvrsn=10