| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| ARMOR SECURITY INC | Business | 127001012 | PEORIA | INOPERATIVE | Verify |
| CERTIFIED SECURITY SYSTEMS INC | Business | 122000759 | RIVER GROVE | NOT RENEWED | Verify |
| BULLDOG SEC AND COMM SYSTEMS INC | Business | 127001016 | HIGHLAND PARK | ACTIVE | Verify |
| C.L.S.S., INC. | Business | 122000768 | CHICAGO | NOT RENEWED | Verify |
| ALERT SECURITY & ENERGY SERVICES INC | Business | 127001022 | SPRINGFIELD | INOPERATIVE | Verify |
| ALBERT D CHESSER | Business | 122000773 | LYNWOOD | NOT RENEWED | Verify |
| UNITED STATES ALERT INC | Business | 127001033 | ITASCA | NOT RENEWED | Verify |
| ALPHA & OMEGA SERVICES INC | Business | 122000778 | PARK RIDGE | NOT RENEWED | Verify |
| ADVANCED HOME SYSTEMS INC | Business | 127001038 | WHEATON | NOT RENEWED | Verify |
| CAPITAL SECURITY & INVESTIGATIONS INC | Business | 122000781 | ROSELLE | ACTIVE | Verify |
| COMSTAR INC | Business | 127001046 | WOOD DALE | CLOSED | Verify |
| DHE INC | Business | 122000791 | MATTESON | INOPERATIVE | Verify |
| ALARMS UNLIMITED MONITORING INC | Business | 127001057 | CHICAGO | NOT RENEWED | Verify |
| GARCIA SECURITY INTERNATIONAL INC | Business | 122000797 | PALATINE | INOPERATIVE | Verify |
| BOB MILLER COMPANY | Business | 127001061 | SPRINGFIELD | NOT RENEWED | Verify |
| R T R ELECTRIC INCORPORATED | Business | 127001063 | TINLEY PARK | NOT RENEWED | Verify |
| MORRISON SECURITY CORPORATION | Business | 122000807 | ALSIP | ACTIVE | Verify |
| SECURITY ALERT INC | Business | 127001065 | ELMHURST | NOT RENEWED | Verify |
| UNLIMITED GROUP SERVICES INCORPORATED | Business | 122000814 | EAST SAINT LOUIS | NOT RENEWED | Verify |
| NATIONAL SECURITY SERVICES INC | Business | 127001069 | EVERGREEN PARK | NOT RENEWED | Verify |
| WE'RE CLEANING INC | Business | 122000815 | CHICAGO | ACTIVE | Verify |
| NATIONWIDE SECURITY INC | Business | 127001075 | MOMENCE | NOT RENEWED | Verify |
| PREMIUM ARMORED SERVICES INC | Business | 122000816 | WESTMONT | NOT RENEWED | Verify |
| SAFE AND SMART SECURITY INC | Business | 127001079 | NAPERVILLE | NOT RENEWED | Verify |
| MAXWELL ASSOCIATES LTD | Business | 122000818 | CHICAGO | NOT RENEWED | Verify |
| MECHANICAL SYSTEMS INC | Business | 127001083 | ROLLING MEADOWS | ACTIVE | Verify |
| MONTERREY SECURITY CONSULTANTS INC | Business | 122000835 | CHICAGO | ACTIVE | Verify |
| SUN COMMUNICATIONS LLC | Business | 127001084 | TROY | CANCELLED | Verify |
| MRC ELECTRIC CORPORATION | Business | 127001093 | PALOS PARK | ACTIVE | Verify |
| SAFETY SERVICE SYSTEMS INC | Business | 122000845 | CHICAGO | ACTIVE | Verify |
| CRIMEBUSTERS OF AMERICA LLC | Business | 127001103 | LIBERTYVILLE | NOT RENEWED | Verify |
| CONSTABLE SERVICES INC | Business | 122000846 | SCHAUMBURG | INOPERATIVE | Verify |
| SHARK SECURITY SYSTEMS INC | Business | 127001106 | CALUMET CITY | NOT RENEWED | Verify |
| WHITFIELD SECURITY SERVICE | Business | 122000862 | CHICAGO | NOT RENEWED | Verify |
| ALL TECH SYSTEMS & INSTALLATIONS INC | Business | 127001122 | PLAINFIELD | NOT RENEWED | Verify |
| METRO CONSULTANTS & SECURITY INC | Business | 122000871 | CHICAGO | NOT RENEWED | Verify |
| ELAM PRIVATE DETECTIVE INC | Business | 122000875 | CANTON | NOT RENEWED | Verify |
| STEALTH SECURITY INC | Business | 127001134 | WOODRIDGE | NOT RENEWED | Verify |
| TOP FLIGHT SECURITY & INVESTIGATIVE SERVICES LTD | Business | 122000880 | MARKHAM | NOT RENEWED | Verify |
| FIRST DETECTION SYSTEMS OF ILLINOIS INC | Business | 127001135 | ELK GROVE VILLAGE | NOT RENEWED | Verify |
| CALEB INVESTIGATION & SECURITY | Business | 122000892 | KANKAKEE | NOT RENEWED | Verify |
| D AND J ELECTRIC INC | Business | 127001156 | CHICAGO | NOT RENEWED | Verify |
| ALFRED W WILLIAMS | Business | 122000896 | CHICAGO | NOT RENEWED | Verify |
| KESCO SECURITY | Business | 127001159 | EVANSTON | NOT RENEWED | Verify |
| SECURITAS SECURITY SERVICES USA INC | Business | 122000899 | DOWNERS GROVE | ACTIVE | Verify |
| THOMAS ALARM SYSTEMS INC | Business | 127001160 | YORKVILLE | NOT RENEWED | Verify |
| CARPINO/HARTIGAN & ASSOCIATES INC | Business | 122000908 | ELMHURST | CANCELLED | Verify |
| ROCK VALLEY ALARM | Business | 127001168 | ROCKFORD | NOT RENEWED | Verify |
| KARD PROTECTION GROUP INC | Business | 122000913 | OAK PARK | NOT RENEWED | Verify |
| AD-MAGNUM INC | Business | 122000928 | CHICAGO | NOT RENEWED | Verify |