| Business | Phone |
| Bearhill Security Inc 1525 Kings Hwy E # 2, Bridgeport 6604 | (203) 366-6556 |
| System Resources 570 Barnum Ave, Bridgeport 6608 | (203) 386-1740 |
| Sargent Security 625 William St, Bridgeport 6608 | (203) 333-6679 |
| Electronic Security Control 108 Evergreen St, Bridgeport 6606 | (203) 336-9506 |