| Business | Phone |
| Group 4 Falck Ltd 214 King St E, Oshawa L1H 1C7 | (905) 579-8020 |
| Groupe 4 Falck 214 King St E, Oshawa L1H 1C7 | (905) 432-1510 |
| Oshawa Security Systems 8 Midtown Dr #269, Oshawa L1J 3Z7 | (905) 725-1041 |
| Securitas Canada 909 Simcoe St N, Oshawa L1G 4W1 | (905) 571-4040 |