Security Dynamics Corp., (SDC), is a fully-insured, Illinois and Indiana licensed private security contractor and private det ... ective agency, serving all of Illinois and Indiana, with specialization in the greater Chicago area. SDC was founded in 1999 by a 20-year law enforcement professional, who partnered with other law enforcement professionals to provide affordable, premium security and investigation services to a wide variety of clientele. SDC is owned and operated by law enforcement professionals. Supervisors are assigned to client and are directly responsible for the management and leadership of their respective accounts. SDC uses the lean operations model, which means customers experience the best possible service for the best possible price with minimal management layers between our clients and our ultimate decision-makers. read more