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Top Cyber Security Companies in the US

Last updated:02 Oct 2025
Created by Surfe | Views: 1
Market context behind this list
Companies Key Contacts Annual Revenue Funding Company Growth Management Team Growth Hiring Status Tech Stack HQ Location
1
Peraton Labs
Information Technology
332
Executive Assistant, Machine Learning Research Scientist, Risk Decision Group - Contract Investigator
>100
$500-1,000M
📉 Negative Growth: -0.6%
334 ↘ 332 Employees
📈 Strong growth: 20%
5 ↗ 6 Employees
Actively Hiring
19
Basking Ridge, New Jersey, United States
2
CertiK
Cyber Security
132
Security Engineer, Staff Security Engineer, Asker
>100
$500-1,000M
$60M raised
Series B, 04-22-2022
📊 Modest Growth: 2.33%
129 ↗ 132 Employees
📊 Modest Growth: 14.29%
7 ↗ 8 Employees
Actively Hiring
29
Town of New Windsor, New York, United States
3
Metro One
Security
645
Security Officer, Security Supervisor, Security Guard
>100
$500-1,000M
📊 Modest Growth: 0.47%
642 ↗ 645 Employees
📊 Modest Growth: 4.76%
21 ↗ 22 Employees
Actively Hiring
21
New York, New York, United States
4
Quest Software
Cyber Security
1,971
Developer, Fringe/trimmings maker, Engagement Manager
>100
$500-1,000M
📉 Negative Growth: -1.45%
2,000 ↘ 1,971 Employees
📊 Modest Growth: 4.55%
22 ↗ 23 Employees
Actively Hiring
30
Aliso Viejo, California, United States
5
Tenable, Inc.
Cloud Security
1,584
Technical Account Manager, Manager, Commercial Sales, Sales And Marketing Intern
>100
$500-1,000M
$255M raised
Post-IPO Equity, 07-29-2020
📊 Modest Growth: 2.26%
1,549 ↗ 1,584 Employees
📊 Modest Growth: 2.94%
34 ↗ 35 Employees
Actively Hiring
50
Columbia, Maryland, United States
6
Cloudflare
Cloud Computing
3,659
Sr. Product Designer, Head of Sales, SLED West, Senior Pricing & Strategy Manager
>100
$500-1,000M
$150M raised
Series E, 03-12-2019
📉 Negative Growth: -0.16%
3,665 ↘ 3,659 Employees
📊 Modest Growth: 2.86%
35 ↗ 36 Employees
Actively Hiring
15
San Francisco, California, United States
7
Akamai Technologies
Cloud Security
8,663
Cloud Support Engineer II, Systems Engineer 2, Principal Software Engineer
>100
$>1,000M
$1,100M raised
Post-IPO Debt, 08-15-2023
📊 Modest Growth: 0.92%
8,584 ↗ 8,663 Employees
📊 Modest Growth: 0.88%
113 ↗ 114 Employees
Actively Hiring
24
Cambridge, Massachusetts, United States
8
General Dynamics Information Technology
Artificial Intelligence
15,226
Program Manager, Systems Administrator, Information Technology Quality Assurance Analyst
>100
$500-1,000M
📉 Negative Growth: -0.19%
15,255 ↘ 15,226 Employees
📊 Modest Growth: 0.88%
114 ↗ 115 Employees
Actively Hiring
26
Falls Church, United States
9
Davis Wright Tremaine
Cyber Security
1,144
Partner, Senior Fraud Investigative Analyst, SR Practice Support Analyst
>100
$500-1,000M
📊 Modest Growth: 0.18%
1,142 ↗ 1,144 Employees
📊 Modest Growth: 0.52%
194 ↗ 195 Employees
Actively Hiring
11
Seattle, Washington, United States
10
Vulnhub
Information Technology
7
CTF Player, Ethical Hacker, CTF Player
+3
$500-1,000M
⏸️ No Growth: 0%
7 Employees
⏸️ No Growth: 0%
Employees
Not Hiring
11
Kerhonkson, New York, United States
11
SonicWall
Cyber Security
1,277
Technical Support Engineer, iCAM, Intern
>100
$500-1,000M
📉 Negative Growth: -0.23%
1,280 ↘ 1,277 Employees
⏸️ No Growth: 0%
29 Employees
Actively Hiring
39
Milpitas, Delaware, United States
12
Inter-Con Security Systems, Inc.
Security
1,566
Diplomatic Security Assistant, Security Officer, Special Police Officer
>100
$500-1,000M
📊 Modest Growth: 0.58%
1,557 ↗ 1,566 Employees
⏸️ No Growth: 0%
30 Employees
Actively Hiring
18
Pasadena, California, United States
13
Gtt
Information Technology
1,835
Major Account Manager, Principal Problem Manager, Senior Client Account Manager, Wholesale
>100
$500-1,000M
📊 Modest Growth: 0.27%
1,830 ↗ 1,835 Employees
⏸️ No Growth: 0%
31 Employees
Actively Hiring
30
Arlington, Virginia, United States
14
Fyi
Enterprise Software
13
Nirajan, Ggik, Marketing Manager
+15
$500-1,000M
⏸️ No Growth: 0%
13 Employees
⏸️ No Growth: 0%
3 Employees
Not Hiring
28
San Francisco, United States
15
Splunk
Artificial Intelligence
7,053
Assigned Expert Consultant, DHA Account Executive, Senior Director, Global Security Operations
>100
$500-1,000M
📊 Modest Growth: 0.01%
7,052 ↗ 7,053 Employees
⏸️ No Growth: 0%
74 Employees
Actively Hiring
13
San Francisco, California, United States
16
Defense information system Agency
Military
2,913
Information Technology Project Manager, Data Center Architect, Telecommunications Specialist
>100
$500-1,000M
📉 Negative Growth: -0.27%
2,921 ↘ 2,913 Employees
⏸️ No Growth: 0%
81 Employees
Actively Hiring
13
Fort Meade, Maryland, United States
17
Qihoo 360
Software
919
技术副总监, product director, Product Manager
>100
$100-500M
$25M raised
Series B, 11-15-2006
📉 Negative Growth: -0.11%
920 ↘ 919 Employees
⏸️ No Growth: 0%
32 Employees
Not Hiring
0
Chaoyang District, China
18
Check Point Software
Cloud Security
5,628
Software Developer, Application Analyst, Training Specialist
>100
$>1,000M
📉 Negative Growth: -0.5%
5,656 ↘ 5,628 Employees
⏸️ No Growth: 0%
55 Employees
Actively Hiring
27
San Carlos, United States
19
Box
Artificial Intelligence
2,405
Large Enterprise Account Executive | Financial Services | FSI | FinServ, Director Of Data Services, Senior Engineering Manager
>100
$500-1,000M
$400M raised
Post-IPO Debt, 09-18-2024
📉 Negative Growth: -0.08%
2,407 ↘ 2,405 Employees
⏸️ No Growth: 0%
46 Employees
Actively Hiring
28
Redwood City, California, United States
20
Palo Alto Networks
Cyber Security
13,116
Sr Director, Systems Engineering - US SLED, Solutions Consultant, Sr. SD BSA
>100
$>1,000M
$10M raised
Series C, 11-03-2008
📉 Negative Growth: -0.08%
13,127 ↘ 13,116 Employees
⏸️ No Growth: 0%
106 Employees
Actively Hiring
33
Santa Clara, California, United States
21
Sally Beauty
Security
3,375
Assistant Manager, Salesperson, Beauty Advisor
+99
$500-1,000M
$600M raised
Post-IPO Debt, 02-27-2024
📉 Negative Growth: -0.21%
3,382 ↘ 3,375 Employees
⏸️ No Growth: 0%
44 Employees
Actively Hiring
6
Denton, Texas, United States
22
Halcyon Tech, Inc
Cyber Security
134
CEO + Co-Founder, Director of Customer Success, Commercial Account Executive
>100
$500-1,000M
$100M raised
Series C, 11-25-2024
📊 Modest Growth: 0.75%
133 ↗ 134 Employees
⏸️ No Growth: 0%
10 Employees
Actively Hiring
26
Ingram, Texas, United States
23
CACI International
National Security
12,460
Financial Analyst, Billing / AR Analyst, Senior Logistics Management Specialist
>100
$>1,000M
📉 Negative Growth: -0.06%
12,468 ↘ 12,460 Employees
⏸️ No Growth: 0%
156 Employees
Actively Hiring
15
Arlington, Virginia, United States
24
McAfee
Cyber Security
2,577
Engineering Operations, Account Executive, Controller
>100
$500-1,000M
📊 Modest Growth: 0.04%
2,576 ↗ 2,577 Employees
⏸️ No Growth: 0%
39 Employees
Actively Hiring
47
San Jose, California, United States
25
Select Sands America
Information Technology
3
Truck Driver, Equipment Operator, Heavy Equipment Operator
+4
$500-1,000M
⏸️ No Growth: 0%
3 Employees
⏸️ No Growth: 0%
Employees
Not Hiring
3
Houston, Texas, United States
26
EMB Phones
E-Commerce
565
Chief Operating Officer, Department Sales Manager
+2
$1-10M
📉 Negative Growth: -0.7%
569 ↘ 565 Employees
⏸️ No Growth: 0%
1 Employees
Not Hiring
5
New York, New York, United States
27
Sucuri
Cyber Security
26
Website Security Specialist, bus, Sucuri Sales Consultant
+44
$500-1,000M
📊 Modest Growth: 4%
25 ↗ 26 Employees
⏸️ No Growth: 0%
Employees
Not Hiring
33
Menifee, California, United States
28
Commvault
Information Technology
2,979
SDE I, Territory Account Manager, Principal Engineer
>100
$500-1,000M
📊 Modest Growth: 0.13%
2,975 ↗ 2,979 Employees
⏸️ No Growth: 0%
48 Employees
Actively Hiring
31
Tinton Falls, New Jersey, United States
29
Venustech
Cyber Security
37
安全服务工程师, Senior Sales Consultant, 品牌营销经理
+99
$500-1,000M
⏸️ No Growth: 0%
37 Employees
⏸️ No Growth: 0%
1 Employees
Actively Hiring
0
New York, New York, United States
30
Firefly
Information Technology
37
Operations Manager, Instructor, Business Development Specialist
>100
$500-1,000M
📊 Modest Growth: 2.78%
36 ↗ 37 Employees
⏸️ No Growth: 0%
3 Employees
Not Hiring
36
Chandler, Arizona, United States
31
Industrial Safety and Security Source
Security
Editor/Founder
+1
$500-1,000M
⏸️ No Growth: 0%
Employees
⏸️ No Growth: 0%
Employees
Not Hiring
33
Durham, North Carolina, United States
32
ManageEngine
Information Services
322
Marketing Analyst | Content Writer | Events, Senior Marketing Specialist, Product Marketing Associate
>100
$500-1,000M
📊 Modest Growth: 1.9%
316 ↗ 322 Employees
⏸️ No Growth: 0%
7 Employees
Not Hiring
8
Pharr, Texas, United States
33
Security Industry Specialists
Physical Security
1,082
National Director Of Operations, gurd, Security Guard
>100
$500-1,000M
📉 Negative Growth: -0.82%
1,091 ↘ 1,082 Employees
⏸️ No Growth: 0%
8 Employees
Actively Hiring
10
Culver City, United States
34
Ampcus Cyber
Cloud Security
86
Senior Business Development Manager, Jr Cybersecurity Analyst, Marketing Executive
>100
$500-1,000M
📉 Negative Growth: -2.27%
88 ↘ 86 Employees
⏸️ No Growth: 0%
9 Employees
Not Hiring
22
Chantilly, Virginia, United States
35
EPlus
Information Services
1,300
Senior Account Executive, Analyst III, IT Sales
>100
$>1,000M
📉 Negative Growth: -1.07%
1,314 ↘ 1,300 Employees
⏸️ No Growth: 0%
54 Employees
Actively Hiring
33
Herndon, Virginia, United States
36
Mandiant
Cyber Security
822
Katsina
+1
$500-1,000M
$70M raised
Private Equity Round, 07-22-2011
⏸️ No Growth: 0%
822 Employees
⏸️ No Growth: 0%
32 Employees
Not Hiring
20
Reston, Virginia, United States
37
Meshimer
Information Technology
2
Technician, meshimer
+2
$500-1,000M
⏸️ No Growth: 0%
2 Employees
⏸️ No Growth: 0%
Employees
Not Hiring
6
Brooklyn, United States
38
DigiCert
Cyber Security
Associate Contracts Manager, Accounting Manager, Housekeeping Specialist
>100
$500-1,000M
⏸️ No Growth: 0%
Employees
⏸️ No Growth: 0%
Employees
Not Hiring
25
Lehi, Utah, United States
39
CyberHoot
Cyber Security
3
Virtual Chief Information Security Officer - vCISO, Sales And Marketing Specialist, Co-Founder
+6
$500-1,000M
⏸️ No Growth: 0%
3 Employees
⏸️ No Growth: 0%
2 Employees
Not Hiring
43
Portsmouth, New Hampshire, United States
40
C5Mi
Information Technology
87
ISSM, SAP Developer II, Enterprise Architect
>100
$500-1,000M
📊 Modest Growth: 2.35%
85 ↗ 87 Employees
⏸️ No Growth: 0%
6 Employees
Actively Hiring
30
Jacksonville Beach, Florida, United States
41
MRX Technologies
Information Technology
1
Accounting Manager, Chief Executive Officer
+2
$500-1,000M
⏸️ No Growth: 0%
1 Employees
⏸️ No Growth: 0%
1 Employees
Not Hiring
4
Las Vegas, Nevada, United States
42
KnowBe4
Cyber Security
1,634
SMB Account Manager, Customer Success Manager, Senior Manager, Public Relations
>100
$500-1,000M
$300M raised
Post-IPO Equity, 06-12-2023
📊 Modest Growth: 0.62%
1,624 ↗ 1,634 Employees
⏸️ No Growth: 0%
15 Employees
Actively Hiring
32
Clearwater, Florida, United States
43
Netscout
Information Technology
1,374
Sr. Product Support Engineer, Security Officer, Senior Software Engineer
>100
$500-1,000M
$42M raised
Series B, 01-01-1999
📉 Negative Growth: -0.15%
1,376 ↘ 1,374 Employees
⏸️ No Growth: 0%
36 Employees
Actively Hiring
14
Westford, Massachusetts, United States
44
LetsDefend
Cyber Security
70
CTF Player, SOC Analyst Learning Path, Self Learner (SOC & Blue Team Practice)
+63
$500-1,000M
📉 Negative Growth: -4.11%
73 ↘ 70 Employees
⏸️ No Growth: 0%
4 Employees
Not Hiring
23
Short Pump, Virginia, United States
45
United States Secret Service
Security
1,140
Deputy Assistant Director, Task Force, Assistant Special Agent in Charge
>100
$500-1,000M
📉 Negative Growth: -0.87%
1,150 ↘ 1,140 Employees
⏸️ No Growth: 0%
20 Employees
Actively Hiring
1
Washington, District of Columbia, United States
46
Deeper Network
Internet
18
CEO, Director Of Business Operations, 物流主管
+16
$500-1,000M
⏸️ No Growth: 0%
18 Employees
⏸️ No Growth: 0%
2 Employees
Not Hiring
29
Santa Clara, United States
47
N-able
Cyber Security
1,310
perito, RAS, Senior Service Desk Analyst
>100
$500-1,000M
$225M raised
Debt Financing, 07-12-2021
📊 Modest Growth: 1.55%
1,290 ↗ 1,310 Employees
⏸️ No Growth: 0%
13 Employees
Actively Hiring
29
Morrisville, North Carolina, United States
48
Freelance Web Development
Cyber Security
2,401
Admin, Web Developer, Full-stack Web Developer
>100
$500-1,000M
📉 Negative Growth: -0.25%
2,407 ↘ 2,401 Employees
⏸️ No Growth: 0%
26 Employees
Not Hiring
9
Colorado, United States
49
Consolidated Nuclear Security
Cyber Security
875
Engineering Advisor, Human Resources Director, Program Manager
>100
$500-1,000M
📉 Negative Growth: -0.57%
880 ↘ 875 Employees
⏸️ No Growth: 0%
17 Employees
Actively Hiring
13
Oak Ridge, Tennessee, United States
50
Moxfive
Cyber Security
32
Sr Director, Technical Advisory, Managing Director, Technical Advisory Services, Information Technology Service Desk support
+51
$500-1,000M
📊 Modest Growth: 6.67%
30 ↗ 32 Employees
⏸️ No Growth: 0%
6 Employees
Not Hiring
15
McLean, Virginia, United States
51
ITPro Today
Information Technology
3
Contributing Writer
+1
$500-1,000M
⏸️ No Growth: 0%
3 Employees
⏸️ No Growth: 0%
Employees
Not Hiring
50
San Francisco, California, United States
52
Gula Tech Adventures
Cyber Security
5
General Manager, Managing Director, Technical Specialist
+4
$500-1,000M
⏸️ No Growth: 0%
5 Employees
⏸️ No Growth: 0%
3 Employees
Not Hiring
16
Columbia, Maryland, United States
53
Cisco
Information Technology
70,006
Senior Financial Analyst, Finance Business OpEx, Technical Leader, Marketing Program Manager
>100
$>1,000M
📉 Negative Growth: -0.23%
70,165 ↘ 70,006 Employees
📉 Negative Growth: -0.16%
631 ↘ 630 Employees
Actively Hiring
15
San Jose, California, United States
54
Saic
Information Technology
16,503
VP, Director for Op Finance, Lead, Sub Contractor
>100
$>1,000M
$22M raised
Post-IPO Equity, 09-13-2010
📉 Negative Growth: -0.41%
16,571 ↘ 16,503 Employees
📉 Negative Growth: -0.36%
276 ↘ 275 Employees
Actively Hiring
19
Reston, Virginia, United States
55
Securitas Security Services USA
Security
12,562
Loss Prevention, Security Officer, Security Supervisor
>100
$500-1,000M
📉 Negative Growth: -0.35%
12,606 ↘ 12,562 Employees
📉 Negative Growth: -0.54%
184 ↘ 183 Employees
Actively Hiring
14
Parsippany-Troy Hills, New Jersey, United States
56
The Mitre Corporation
National Security
6,186
Lead Behavioral Health Scientist, Senior RF Systems Engineer, Network & Distributed Systems Engineer
>100
$500-1,000M
📉 Negative Growth: -0.02%
6,187 ↘ 6,186 Employees
📉 Negative Growth: -0.66%
151 ↘ 150 Employees
Actively Hiring
22
McLean, Virginia, United States
57
Allied Universal
Security
25,953
Security Guard, Security Officer, Field Investigator
>100
$500-1,000M
$9,000M raised
Private Equity Round, 09-01-2019
📉 Negative Growth: -0.77%
26,155 ↘ 25,953 Employees
📉 Negative Growth: -0.75%
267 ↘ 265 Employees
Actively Hiring
22
Irvine, California, United States
58
Amentum
Information Technology
12,802
Materials Control Specialist, Principal Safety Engineer, MV-22 Osprey Mechanic 2
>100
$500-1,000M
📉 Negative Growth: -0.51%
12,868 ↘ 12,802 Employees
📉 Negative Growth: -1.45%
138 ↘ 136 Employees
Actively Hiring
30
Germantown, Maryland, United States
59
F5
Information Technology
5,288
Senior Program Manager, Solutions Engineer, Senior Regional Services Manager
>100
$>1,000M
📊 Modest Growth: 0.06%
5,285 ↗ 5,288 Employees
📉 Negative Growth: -2.04%
49 ↘ 48 Employees
Actively Hiring
11
Seattle, Washington, United States
60
Trellix
Cyber Security
2,682
Staff Software Development Engineer, Staff Data Scientist, Program Manager | Musarubra Software India Pvt Ltd (Trellix)
>100
$500-1,000M
📉 Negative Growth: -0.52%
2,696 ↘ 2,682 Employees
📉 Negative Growth: -2.44%
41 ↘ 40 Employees
Actively Hiring
29
Springboro, Ohio, United States
61
Proofpoint
Cloud Security
3,514
Sustaining Engineer, Lead Software Engineer, Sr. Information Protection | Cloud Security Specialist
>100
$500-1,000M
$800M raised
Post-IPO Debt, 08-21-2019
📉 Negative Growth: -0.23%
3,522 ↘ 3,514 Employees
📉 Negative Growth: -2.5%
40 ↘ 39 Employees
Actively Hiring
26
Sunnyvale, California, United States
62
Exelis Inc.
Military
287
Software Engineer, GIS Specialist, Program Manager
+10
-
📉 Negative Growth: -0.35%
288 ↘ 287 Employees
📉 Negative Growth: -50%
2 ↘ 1 Employees
Not Hiring
0
Nashua, New Hampshire, United States

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