Digital Forensic Research Workshop: http://www.dfrws.org/
High Tech Crime Consortium: http://www.hightechcrimecops.org/
High Technology Criminal Investigation Association: http://htcia.org/
International Association of Computer Investigative Specialists: http://www.cops.org/
International Information Systems Forensic Association: http://www.infoforensics.org/index.asp
International Organization on Computer Evidence: http://www.ioce.org/
Scientific Working Group on Digital Evidence: http://ncfs.org/swgde/index.html