About Us

Significant milestones in ComSec LLC’s history follow:

2007:

• ComSec LLC was founded by J.D. LeaSure, its President/CEO, to address the need for an expert Technical Surveillance Countermeasures (TSCM) service provider in the local Hampton Roads, Virginia area.

2008:

• Demand for global counterespionage services continued to grow, and ComSec LLC met this demand by expanding its service area to USA nationwide.

2010:

• At the request of government personnel (due to J.D. LeaSure’s depth of knowledge of technical surveillance threats), ComSec LLC began developing and supplying mobile, field ready TSCM sweep equipment to government, military, law enforcement and corporations.

2012-2013:

• ComSec LLC expanded its service area to globally as a result of demand for our expertise.
• ComSec LLC uncovered a nation stated sponsored attack in east Asia and southeast Asia perpetrated against a US technology company. This was the first known instance of the use of the GSM cellular network to steal intellectual property from a corporate network.
• J.D. LeaSure pioneered the field of practice in the space between TSCM and cybersecurity that he called “Cyber TSCM.”
• ComSec LLC became the first company to offer TSCM/Cyber TSCM services to address traditional eavesdropping devices, as well as cyber eavesdropping devices and hybrid eavesdropping devices.

2015:

• ComSec LLC is appointed the exclusive distribution partner for Professional Development TSCM Group Inc.’s KESTREL TSCM Professional Software for the United States of America (USA) including all states and territories, representing commercial interests, US Government, and third-party Military Contractor Sales.

2016:

• ComSec LLC opens a satellite office in Washington, DC to serve government, military, corporations, non-profits, dignitaries and executives in the greater Washington, DC area.

2017:

• ComSec LLC becomes the exclusive commercial provider of IMSI Catcher Detection Services using the OverWatch system. This addition to ComSec LLC’s service offerings provides detection capabilities for the growing threat posed by the use of illicit IMSI catchers to syphon information on cellular devices.

2018:

• ComSec LLC receives our largest single order for ComSec Kestrel Surface RF Locator 2 Kits, which was in excess of $1.3 million. Several additional orders of the ComSec Kestrel Surface RF Locator Kits and ComSec Kestrel Surface RF Locator 2 Kits resulted in annual kit sales of over $2.2 million dollars.

2019:

• ComSec LLC was named the exclusive North American supplier of the JJN Digital Handheld TSCM equipment.
• ComSec LLC added Open Source Intelligence (OSINT) investigations to our service offerings to address corporate and executive vulnerabilities through clandestine and unintentional open source/Internet disclosures.

2021:

• ComSec LLC expanded its product offerings and was named the exclusive North American supplier of the QCC Sentinel and the Phantom Passive BTS Hunter.
• ComSec LLC expanded its forensics services to include computer forensics services.

2022:

• ComSec LLC introduced two new kits, The Grayman and The Covert, to address limited scope sweeps when a full scope sweep is not possible.

2023: 

• ComSec LLC was named the exclusive USA Distributor of the Komcept Solutions Ltd. TSCM Product lines.
• ComSec LLC added the QCC ELF Hidden Camera Detector to its TSCM products offerings.

2024:

• ComSec LLC added the Kestrel Lightning brand real-time spectrum analyzers to its product offerings, and developed the Storm SIGINT kit and other covert mobile, friendly kits using the Kestrel TSCM Professional Software and the Kestrel Lightning RTSAs.