| Business | Phone |
| Aaa Security Guard Co 403 Washington St, Brookline 2446 | (617) 423-2222 |
| Northeast Security Inc 1 Harvard St # 400, Brookline 2445 | (617) 739-1500 |
| Minuteman Security Inc 1111 Beacon St, Brookline 2446 | (617) 738-4803 |
| Longwood Security Svc Inc 2 Brookline Pl # 203, Brookline 2445 | (617) 735-0600 |