Security and Investigations Company Search & Contact Data – Page 6

List of Security and Investigations Companies

Selling into Security and Investigations? Here are its companies, biggest first, including Protos Off Duty Services, Terminal Security Solutions, Inc. and Advanced Security. Open a company to see its revenue range, headcount, tech stack and the people to contact.

Company NameIndustryLocationFundingRevenueEmployees

Protos Off Duty Services

Security and Investigations

United States, Texas, Houston

$10M - $25M

146

Terminal Security Solutions, Inc.

Security and Investigations

United States, California, Long Beach

$10M - $25M

146

Advanced Security

Security and Investigations

New Zealand, Auckland, East Tamaki

$10M - $25M

145

Aotea Security (NZ) Ltd

Security and Investigations

New Zealand, Otago, Saint Kilda

<$1M

144

Protection Group International

Security and Investigations

United Kingdom, England, London

$250M - $500M

144

SS8 Networks

Security and Investigations

United States, California, Milpitas

$41M

$50M - $100M

144

Creative Security Company

Security and Investigations

United States, California, San Jose

$10M - $25M

143

Hackett Security

Security and Investigations

United States, Missouri, St. Louis

$1M - $10M

142

APG Security (US)

Security and Investigations

United States, New Jersey, South Amboy

$25M - $50M

141

CCL Solutions Group

Security and Investigations

United Kingdom, England, Stratford-upon-avon

$1M - $10M

141

Allstar Security & Consulting Inc.

Security and Investigations

United States, New York, New York

$10M - $25M

140

Fire Department

Security and Investigations

United States, Minnesota, Lakeville

$10M - $25M

140

Scotland Yard Security

Security and Investigations

United States, Pennsylvania, Philadelphia

$10M - $25M

140

CCTV.Net

Security and Investigations

United States, California, Van Nuys

$10M - $25M

139

Evergreen Fire and Security

Security and Investigations

United States, Washington, Tacoma

$25M - $50M

139

Herta

Security and Investigations

Spain, Catalonia, Barcelona

$1M - $10M

139

U.S. Security Care, Inc.

Security and Investigations

United States, Pennsylvania, Blue Bell

$10M - $25M

139

VTI Security - A Paladin Technologies Company

Security and Investigations

United States, Minnesota, Burnsville

$25M - $50M

139

Advanced Security Concepts Inc.

Security and Investigations

United States, California, Van Nuys

$25M - $50M

138

T3 Security

Security and Investigations

United Kingdom, England, Seaton Burn

$1M - $10M

138

Triumph Protection Group

Security and Investigations

United States, California, Vacaville

$10M - $25M

137

Colonial Security Services

Security and Investigations

United States, Pennsylvania, Philadelphia

$10M - $25M

136

KENTECH

Security and Investigations

United States, Illinois, Chicago

$10M - $25M

136

Nardello & Co.

Security and Investigations

United States, New York, New York

$50M - $100M

136

Solace Global

Security and Investigations

United Kingdom, England, Poole

$1M - $10M

136

FEDERAL SECURITY SERVICES LLC

Security and Investigations

United States, North Carolina, Swansboro

$25M - $50M

135

All Pro Security LLC

Security and Investigations

United States, Utah, Callao

$10M - $25M

134

Alert Security Asset Protection

Security and Investigations

United States, Nevada, Sparks

$10M - $25M

133

Global Security Concepts

Security and Investigations

United States, California, Los Angeles

$10M - $25M

131

Optic Security Group

Security and Investigations

Australia, Queensland, Brisbane Airport

$1M - $10M

131

Priority One Security

Security and Investigations

United States, South Carolina, Greenville

$10M - $25M

131

i-Sprint

Security and Investigations

Singapore, East Region, Kampong Chai Chee

$1B - $10B

131

American Security Group

Security and Investigations

United States, Virginia, Richmond

$10M - $25M

130

Barbier Security Group

Security and Investigations

United States, California, San Rafael

$10M - $25M

130

Point 2 Point Global Security, Inc.

Security and Investigations

United States, Texas, Addison

$10M - $25M

129

Premier Security Corporation

Security and Investigations

United States, Illinois, Chicago

$10M - $25M

128

Security Central

Security and Investigations

United States, North Carolina, Statesville

$25M - $50M

127

Triton Security inc

Security and Investigations

United States, Nevada, Las Vegas

$10M - $25M

127

Secureone Security Services Inc

Security and Investigations

United States, Illinois, Crestwood

$10M - $25M

126

VSS Security Services

Security and Investigations

United States, Arizona, Phoenix

$10M - $25M

126

Global Security and Innovative Strategies (GSIS)

Security and Investigations

United States, District of Columbia, Washington

$1M - $10M

125

New Age Protection, Inc.

Security and Investigations

United States, Virginia, Springfield

$25M - $50M

125

Iverify

Security and Investigations

United States, North Carolina, Charlotte

$52M

$25M - $50M

124

Kent Security Services Inc

Security and Investigations

United States, Florida, Naples

$25M - $50M

124

Sentrycs | Counter-Drone Solutions Adapting at the Speed of Threats

Security and Investigations

Israel, Tel Aviv, Tel Aviv-yafo

$10M - $25M

124

ACT Security Group

Security and Investigations

United States, Texas, Austin

$10M - $25M

123

Blue Hackle LLC

Security and Investigations

United States, New Jersey, Laurel Springs

$1M - $10M

123

Covered 6

Security and Investigations

United States, California, Moorpark

$10M - $25M

123

Kromek Group plc

Security and Investigations

United Kingdom, England, Sedgefield

$94M

$10M - $25M

123

PhotoFax

Security and Investigations

United States, Illinois, Hampshire

$25M - $50M

123

Security Management of South Carolina

Security and Investigations

United States, South Carolina, Columbia

$10M - $25M

123

CONTROLTEK

Security and Investigations

United States, New Jersey, Bridgewater

$25M - $50M

122

Doyle Security Systems, Inc.

Security and Investigations

United States, New York, Rochester

$25M - $50M

122

Executive Event Services, LLC

Security and Investigations

United States, California, Yorba Linda

$10M - $25M

122

IdentiSys

Security and Investigations

United States, Minnesota, Eden Prairie

$25M - $50M

122

Security Specialists

Security and Investigations

United States, Connecticut, Stamford

$10M - $25M

122

AM-GARD, INC.

Security and Investigations

United States, Pennsylvania, Pittsburgh

$10M - $25M

120

Guard-Systems, Inc.

Security and Investigations

United States, California, Monterey Park

$10M - $25M

120

Safe and Sound Security

Security and Investigations

United States, California, Concord

$25M - $50M

120

VIVOTEK USA

Security and Investigations

United States, California, San Jose

$10M - $25M

120

ACS Security - Powered by Alert 360

Security and Investigations

United States, California, Los Angeles

$10M - $25M

119

AJ SQUARED SECURITY

Security and Investigations

United States, New York, Jamaica

$10M - $25M

119

Asset Protection Corporation

Security and Investigations

$1M - $10M

119

Atronic

Security and Investigations

United States, Kansas, Overland Park

$50M - $100M

119

American Security Services, LLC

Security and Investigations

United States, Illinois, Forest Park

$10M - $25M

118

Athena Security Inc.

Security and Investigations

United States, Texas, Austin

$20M

$100M - $250M

118

MSM Security Services LLC

Security and Investigations

United States, Maryland, Chevy Chase

$10M - $25M

118

Salient Systems

Security and Investigations

United States, Texas, Austin

$25M - $50M

118

ARMADA, Ltd.

Security and Investigations

United States, Ohio, Powell

$25M - $50M

117

Data Quest Ltd.

Security and Investigations

United States, Massachusetts, New Bedford

$1M - $10M

117

Executive Security Services, Inc.

Security and Investigations

United States, Oregon, Clackamas

$10M - $25M

117

FE Moran Security Solutions

Security and Investigations

United States, Illinois, Champaign

$10M - $25M

117

Horsemen Investigations

Security and Investigations

United States, California, Fullerton

$25M - $50M

117

ISSM Protective Services Inc

Security and Investigations

United States, New Jersey, Toms River

$10M - $25M

117

Pono Security

Security and Investigations

United States, Oregon, Roseburg

$1M - $10M

117

Valentis

Security and Investigations

United States, Pennsylvania, Pittsburgh

$1M - $10M

117

American Services, Inc.

Security and Investigations

United States, South Carolina, Greenville

$10M - $25M

116

Heras Norway

Security and Investigations

Norway, Akershus, Hagan

$1M - $10M

116

Senaca Group

Security and Investigations

Ireland, Kildare, Naas

$1M - $10M

116

The Robison Group

Security and Investigations

United States, Michigan, Troy

$10M - $25M

116

By Demes España

Security and Investigations

Spain, Community of Madrid, Coslada

$1M - $10M

115

DMAC Security

Security and Investigations

United States, Maryland, Baltimore

$1M - $10M

115

GLOBAL OPS

Security and Investigations

United States, New York, New York

$10M - $25M

115

Integrated Security Services

Security and Investigations

United States, New York, New York

$50M - $100M

115

Black Knight Security

Security and Investigations

United States, Pennsylvania, Pittsburgh

$10M - $25M

114

CMS - Criticom Monitoring Services

Security and Investigations

United States, Florida, Longwood

$10M - $25M

114

Blue Star Security

Security and Investigations

United States, Illinois, Rosemont

$10M - $25M

113

ESI Security Services

Security and Investigations

United States, Nevada, Reno

$10M - $25M

113

GMSC Security

Security and Investigations

United States, New York, New York

$10M - $25M

113

Max Security USA

Security and Investigations

United States, New York, Huntington

$10M - $25M

113

Regions Security Services, Inc.

Security and Investigations

United States, Florida, Miami

$10M - $25M

113

RosettiStarr

Security and Investigations

United States, Maryland, Bethesda

$25M - $50M

113

Atlas Security

Security and Investigations

United States, Missouri, Springfield

$10M - $25M

112

DFW Security Protective Force

Security and Investigations

United States, Texas, Fort Worth

$10M - $25M

112

ProTech Security

Security and Investigations

United States, Pennsylvania, Bensalem

$25M - $50M

112

Brantley Security Services

Security and Investigations

United States, Kentucky, Louisville

$10M - $25M

111

Ohio Support Services

Security and Investigations

United States, Ohio, Columbus

$10M - $25M

111

American Heritage Protective Services, Inc.

Security and Investigations

United States, Illinois, Alsip

$10M - $25M

109

Becker & Company, Inc.

Security and Investigations

United States, Colorado, United States Air Force Acad

$10M - $25M

109

Building Security Services

Security and Investigations

United States, New Jersey, South Orange

$10M - $25M

109

About Security and Investigations companies

Which Security and Investigations companies are listed?

Security and Investigations companies of every size, from enterprises to startups, sorted by headcount so the biggest accounts come first. Companies on the list include Protos Off Duty Services, Terminal Security Solutions, Inc. and Advanced Security. Every company profile gives you revenue range, headcount, headquarters, tech stack and an employee directory with verified emails and phone numbers.

Where are Security and Investigations companies located?

Security and Investigations companies are most often headquartered in the United States, the United Kingdom, Canada, Australia, the Netherlands and France.

What technologies do Security and Investigations companies use?

The tools most often found in the tech stacks of Security and Investigations companies include WordPress, Microsoft 365, Amazon Web Services, Google Cloud, Shopify and Google Workspace. Useful if you integrate with, complement or compete with one of them.

How do I reach decision makers at Security and Investigations companies?

Open a company to see its employee directory and email format, then use LeadIQ to get verified work emails and phone numbers for the people you want to reach and push them straight to your CRM or sequencer.

Insights based on LeadIQ data refreshed in September 2026.

Top companies by employee count

Security and Investigations Companies

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List of Security and Investigations Companies

About Security and Investigations companies

Which Security and Investigations companies are listed?

Where are Security and Investigations companies located?

What technologies do Security and Investigations companies use?

How do I reach decision makers at Security and Investigations companies?

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Security and Investigations Companies

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List of Security and Investigations Companies

About Security and Investigations companies

Which Security and Investigations companies are listed?

Where are Security and Investigations companies located?

What technologies do Security and Investigations companies use?

How do I reach decision makers at Security and Investigations companies?

Search by Industry

Search by Country

Search by Technology

Top companies by employee count

Ready to create more pipeline?

Find key decision makers, at the right time,
with the right message.