Telephone Surveillance · Conference Lines
Conference Line Intrusion Detection
Detection of unauthorized participants and monitoring systems on conference bridge and teleconference platforms.
Communications surveillance extends well beyond a bug in a room. Your phone lines — analog, digital, VoIP, and conference call systems — can be tapped, bridged, or intercepted at multiple points along their path. A tap placed at a terminal block in your building's basement, an unauthorized bridge on your PBX, or a conference call that has been joined by an uninvited party are all documented threats that Empire Investigation's telephone surveillance team detects and documents.
Landline tap detection involves impedance testing, loop current analysis, RF detection for active transmitting taps, and physical inspection of terminal blocks, junction boxes, and wiring runs. VoIP and conference line analysis involves network traffic inspection, system log review, and testing for unauthorized concurrent sessions or bridges. Our investigators have the technical and legal knowledge to preserve findings for criminal prosecution or civil litigation.
How Conference Line Intrusion Occurs
Conference line intrusion can occur through credential compromise, bridge vulnerabilities, unauthorized dial-in, or through physical access to conference room equipment. In some cases, a party to the call may provide access credentials to an unauthorized listener. Older conference bridge systems with weak authentication are particularly vulnerable to unauthorized join attempts that do not appear on participant lists.
The Value of Conference Call Surveillance
For anyone seeking intelligence on an organization's strategy, negotiations, or legal planning, access to a recurring conference call represents extraordinary value. A single compromised standing weekly call can provide continuous intelligence on an organization's operations, personnel decisions, and strategic direction.
What We Look For
- Unauthorized participants joined with compromised credentials
- Hardware recording devices attached to conference phone hardware
- Software monitoring of conference bridge platforms
- Bridge vulnerabilities allowing silent join without participant notification
- Physical audio recording of conference room during calls
Our Sweep Process
Conference System Assessment
Review of conference phone hardware, bridge platform, and access credentials.
Hardware Inspection
Physical inspection of all conference room audio equipment.
Credential and Access Audit
Review of access credentials and bridge platform security settings.
Test Conference Audit
Controlled test to identify unauthorized access or monitoring.
Recommendations
Technical remediation and security protocol recommendations.
Frequently Asked Questions
Confidential Inquiry
Schedule a Confidential TSCM Sweep
If you suspect surveillance or want to verify your environment is secure, professional detection is the only way to know with certainty.
All inquiries handled with complete discretion.