Company lists · Data refreshed September 2026
Top 11 Information security consultants based in Philadelphia, United States
RevenueBase identified 27 information security consultants headquartered in Philadelphia, United States as of September 2026 and tracks 424 professional contacts across them, including 262 with verified work emails. New York is the largest hub.
This list covers information security consultants headquartered in Philadelphia, United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, how directly it supports the match, and when it was last checked. Data refreshed September 3, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 11 largest information security consultants based in Philadelphia, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 311 | ||||
“We deliver cybersecurity consulting, 24x7 operations and SaaS to leading companies in the Financial Services, Healthcare, Pharmaceuticals, Technology and Retail industries.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 2 | 23 | ||||
“Transforming IT and Cybersecurity Services for Digital Innovation CSM International LLC is a Service Disabled Veteran-owned and operated LLC focused on providing consulting and…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 3 | 21 | ||||
“COSECURE, an ancillary business of Cozen O'Connor, is a national security consulting firm dedicated to building safer workplaces, communities, and schools through risk…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 4 | Kolins Security GroupPartial evidence | 8 | |||
“Kolins Security Group is a team of nationally recognized, court-certified physical security experts.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 5 | MitoviaIndirect evidence | 4 | |||
“At Mitovia, we are empowering organizations and service providers to operationalize risk management and value creation by effectively assessing, planning, and managing…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 6 | Moore Tech Guru LLCIndirect evidence | 3 | |||
“Elevate your business with Moore Tech Guru, where innovation meets excellence in IT solutions.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 7 | Signify SolutionIndirect evidence | 3 | |||
“Signify Solution is founded with the mission to inspire passion, integrity, proficiency and authenticity to help our clients solve their technology and risk management complex…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 8 | Markus Alliance, Inc. Cyber SecurityPartial evidence | 1 | |||
“Markus Alliance: Securing Your Digital World We are dedicated to providing the most comprehensive cybersecurity services available, with a particular emphasis on penetration…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 9 | ThreatlogicPartial evidence | 1 | |||
“Helping high-performing companies apply pragmatic cybersecurity solutions by assessing the effectiveness of security controls, processes, teams, and technology and recommending…” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 10 | 1 | ||||
“Danger Close is there to solve your Cyber Security needs.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
| 11 | Source Callé LLCIndirect evidence | 1 | |||
“We make organizations more trusted, resilient and valuable, with strategies and tactics that improve cybersecurity, privacy and regulatory compliance, and risk management.” Source: company website · checked Sep 3, 2026Thanks. The Data Team will review it. | |||||
Showing 11 of 27 information security consultants based in Philadelphia, United States
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Information security consultants based in Philadelphia, United States at a glance
As of Sep 3, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than this city, so it is reported there. Company counts and contact totals on this page are exact for Philadelphia, over 27 companies.
How this list was built
Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among information security consultants, so some rows will be adjacent to the category rather than pure plays. The description and evidence rating on every row are there so you can check each match yourself.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Companies headquartered in Philadelphia, United States whose own description of what they do matches “information security consultants”. Matching reads each company's description, not its industry code or its name.
- What we exclude
- Companies whose own description does not clearly place them among information security consultants, and records with no verified work email. Companies headquartered outside Philadelphia are excluded even when they keep an office there.
- Match quality
- In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and an evidence rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
- 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
- Every listed company carries at least one verified work email, 262 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 3, 2026. Lists refresh periodically as the graph is re-checked.
- Corrections
- Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.
Information security consultants by metro in the United States
- Information security consultants in New York223
- Information security consultants in Washington147
- Information security consultants in Houston139
- Information security consultants in Atlanta128
- Information security consultants in Chicago106
- Information security consultants in Miami106
- Information security consultants in Dallas102
- Information security consultants in Austin99
- Information security consultants in Tampa85
- Information security consultants in San Francisco80
- Information security consultants in Los Angeles79
- Information security consultants in San Diego65
- Information security consultants in Charlotte63
- Information security consultants in Arlington61
- Information security consultants in Boston61
- Information security consultants in Denver58
- Information security consultants in Phoenix52
- Information security consultants in Seattle51
- Information security consultants in San Antonio50
- Information security consultants in Alexandria48
- Information security consultants in Orlando47
- Information security consultants in Reston43
- Information security consultants in Las Vegas41
- Information security consultants in Raleigh39
- Information security consultants in Portland38
- Information security consultants in Columbia37
- Information security consultants in Ashburn34
- Information security consultants in Mclean34
- Information security consultants in Fairfax33
- Information security consultants in Minneapolis33
- Information security consultants in Baltimore32
- Information security consultants in Columbus30
- Information security consultants in Scottsdale30
- Information security consultants in Herndon29
- Information security consultants in Nashville29
- Information security consultants in Richmond29
- Information security consultants in Huntsville28
- Information security consultants in Wilmington28
- Information security consultants in Philadelphia27
- Information security consultants in Plano27
- Information security consultants in Indianapolis26
- Information security consultants in Pittsburgh26
- Information security consultants in Sheridan26
Frequently asked
How many information security consultants are there based in Philadelphia, United States?
RevenueBase identified 27 information security consultants headquartered in Philadelphia, United States as of September 2026, matched on each company's own description of what it does rather than its industry code.
What is the largest company on this list?
Security Risk Advisors, headquartered in Philadelphia, tops this list with the largest team on record.
Which city has the most information security consultants?
New York leads with 223 headquartered companies, followed by Washington (147) and Houston (139).
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 262 verified decision-maker contacts tracked across these 27 companies.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 3, 2026.
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About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 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 with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
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