| Business | Phone |
| Matrix Security Systems Cockysvl Hnt Vly 21030 | (410) 252-3221 |
| Risk Management Consultants 18 Warren Rd, Cockysvl Hnt Vly 21030 | (410) 683-4880 |
| Security Assoc Of Maryland Inc 246 Cockeysville Rd, Cockysvl Hnt Vly 21030 | (410) 785-7200 |
| Alarm Security Group Mntrng 246 Cockeysville Rd, Cockysvl Hnt Vly 21030 | (410) 584-2162 |
| Alarm Watch 211 Cockeysville Rd, Cockysvl Hnt Vly 21030 | (410) 785-1740 |
| Digital Electronic Security 213 Cockeysville Rd, Cockysvl Hnt Vly 21030 | (410) 229-0022 |
| Home Safe Security 124 Lake Front Dr, Cockysvl Hnt Vly 21030 | (410) 427-7233 |