Company lists · Data verified August 2026

Top 25 Data loss prevention software companies based in the United States

Name: Data loss prevention software companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Verified Aug 28, 2026 92 companies tracked

There are 92 data loss prevention software companies headquartered in the United States (RevenueBase, August 2026). RevenueBase tracks 2,995 professional contacts across them, including 1,051 with verified work emails and 780 with mobile numbers. New York is the largest hub.

This list covers data loss prevention software companies headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Data current as of August 28, 2026.

92Companies

2,995Contacts tracked

1,051Verified emails

780Mobile numbers

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The 25 largest data loss prevention software companies based in the United States

Ranked by team size

Top 25 of 92 data loss prevention software companies based in the United States, ranked by team size, largest first. Data verified Aug 28, 2026. Click a count to unlock that company's people.
#	Company	HQ	Employees	Contacts	Verified emails
1	Guidance Software	Las Vegas, NV	501-1,000	496	40
2	Protegrity	Stamford, CT	201-500	353	186
3	Lepide	Austin, TX	51-200	179	40
4	Pkware	Milwaukee, WI	51-200	153	90
5	Fortra's Digital Guardian	Eden Prairie, MN	201-500	153	60
6	Dtex Systems	Saratoga, CA	51-200	123	88
7	Layerx Security	New York	51-200	107	12
8	Nightfall AI	San Francisco, CA	51-200	87	43
9	GTB Technologies INC	West Palm Beach, FL	51-200	83	26
10	Qohash	Cambridge, MA	51-200	68	38
11	MIND	Seattle, WA	51-200	59	34
12	Certes	Pittsburgh, PA	51-200	53	30
13	Ground Labs	Austin, TX	51-200	40	17
14	Spirion	Tampa, FL	51-200	36	28
15	Polymer Runtime Data Security	Austin, TX	11-50	34	5
16	Zecurion	New York, NY	51-200	32	1
17	Observeit	Boston, MA	51-200	31	15
18	Cavelo INC	New York, NY	11-50	29	15
19	Cibecs	San Jose, CA	11-50	29	14
20	Symmetry Systems	San Francisco, CA	11-50	27	17
21	Datapatrol	Washington, DC	11-50	25	16
22	Netkiller	San Francisco, CA	11-50	25	9
23	Defensx	New York, NY	11-50	24	16
24	Data443 Risk Mitigation Inc. Atds	Durham, NC	51-200	24	13
25	Axis Technology, LLC	Boston, MA	51-200	24	10

Showing 25 of 92 data loss prevention software companies based in the United States

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Data loss prevention software companies based in the United States at a glance

As of Aug 28, 2026

11-50Median size (employees)

New YorkLargest hub · 12 HQs

780Contacts with mobile numbers

5Emails re-verified in last 30 days

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Data loss prevention software companies by metro

Metro	Companies
Data loss prevention software companies in New York	12
Data loss prevention software companies in San Jose	6
Data loss prevention software companies in San Francisco	5
Data loss prevention software companies in Austin	4
Data loss prevention software companies in Chicago	3
Data loss prevention software companies in Boston	2
Data loss prevention software companies in Sunnyvale	2
Data loss prevention software companies in Bellevue	2

How this list was built

Source: The RevenueBase company graph: 21.3 million companies and 398.9 million professional contacts resolved from primary sources.
Inclusion: Companies whose own business descriptions match “data loss prevention software companies”, with match quality audited by blind human judging, and headquartered in the United States.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Contact records re-verify on a rolling cadence; 5 contacts on this list were re-verified in the last 30 days.
Refresh: Lists are refreshed periodically as the underlying company graph is re-verified. Last verified Aug 28, 2026.

Frequently asked

How many data loss prevention software companies are there based in the United States?

There are 92 data loss prevention software companies headquartered in the United States as of August 2026 (RevenueBase).

What is the largest company on this list?

Guidance Software, headquartered in Las Vegas, tops this list with the largest team on record.

Which city has the most data loss prevention software companies?

New York leads with 12 headquartered companies, followed by San Jose (6) and San Francisco (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,051 verified decision-maker contacts tracked across these 92 companies.

How current is this list?

The list is refreshed periodically as the underlying company graph is re-verified. It was last verified on August 28, 2026.

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About this data

RevenueBase is a B2B contact data platform. Its company graph covers 21.3 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph, the same data that powers RevenueBase's B2B data products and the free research portal.