GTCR LLC, a private equity firm, is looking for a suitable buyer for its home security company, Protection 1, for north of $1.5 billion. Morgan Stanley has been tapped to join in the effort. GTCR took Protection 1 private back in 2010 for $828 million, including all debt. Protection 1, claims to be the largest full service business and home security company in the United States, sells electronic security alarm monitoring services for residential and commercial markets. The services offered include burglary and fire protection, access control, video surveillance and maintenance. The security company serves more than 1 million customers and employs over 3,000 people in over 70 locations in the United States.