Insights

Specialized Cybersecurity Focus GreyCastle Security's exclusive dedication to cybersecurity positions them as a go-to provider for organizations seeking expert-level threat protection, presenting an opportunity to offer tailored security solutions and Managed Security Operations Center services to their clients.

Rapid Growth Recognition Being recognized on the Inc. 5000 list and consistently ranked as a top place to work indicates a dynamic company with expanding capabilities, making them a potential strategic partner or client for advanced security technologies and scalable cybersecurity services.

Strategic Industry Partnerships Their collaboration with Blacks In Cybersecurity demonstrates a commitment to diversity and community engagement, opening avenues to collaborate on inclusive cybersecurity initiatives, training programs, and diversified talent acquisition.

Recent Service Launch The introduction of their Managed Security Operations Center reflects a focus on proactive threat management, suggesting opportunities to resell or integrate complementary cybersecurity tools, monitoring solutions, or threat intelligence platforms.

Growth and Acquisition Recent acquisition by DeepSeas LLC indicates potential for expanded reach and increased service offerings, presenting prospects to introduce innovative cybersecurity products, consulting services, or customized security architectures aligned with their evolving strategic goals.

GreyCastle Security Tech Stack

GreyCastle Security uses 8 technology products and services including RSS, Microsoft 365, Microsoft Word, and more. Explore GreyCastle Security's tech stack below.

  • RSS
    Content Management System
  • Microsoft 365
    Email
  • Microsoft Word
    Office Suites
  • Office 365
    Office Suites
  • Java
    Programming Languages
  • X-Content-Type-Options
    Web & Portal Technology
  • Adobe Fonts
    Web Fonts
  • Draftpress HFCM
    Web Tools And Plugins

Media & News

GreyCastle Security's Email Address Formats

GreyCastle Security uses at least 1 format(s):
GreyCastle Security Email FormatsExamplePercentage
FLast@greycastlesecurity.comJDoe@greycastlesecurity.com
93%
LastFi@greycastlesecurity.comDoeJo@greycastlesecurity.com
3%
First.Last@greycastlesecurity.comJohn.Doe@greycastlesecurity.com
2%
F.Last@greycastlesecurity.comJ.Doe@greycastlesecurity.com
2%

Frequently Asked Questions

Where is GreyCastle Security's headquarters located?

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GreyCastle Security's main headquarters is located at 185 Jordan Road, Suite 3. The company has employees across 2 continents, including North AmericaAsia.

What is GreyCastle Security's phone number?

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You can contact GreyCastle Security's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is GreyCastle Security's official website and social media links?

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GreyCastle Security's official website is greycastlesecurity.com and has social profiles on LinkedIn.

What is GreyCastle Security's SIC code NAICS code?

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GreyCastle Security's SIC code is 7381 - Detective, Guard, and Armored Car Services NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does GreyCastle Security have currently?

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As of December 2025, GreyCastle Security has approximately 69 employees across 2 continents, including North AmericaAsia. Key team members include Cfo, Executive Director: G. P.Chief Privacy Officer: D. R.Owner: E. J. W.. Explore GreyCastle Security's employee directory with LeadIQ.

What industry does GreyCastle Security belong to?

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GreyCastle Security operates in the Computer and Network Security industry.

What technology does GreyCastle Security use?

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GreyCastle Security's tech stack includes RSSMicrosoft 365Microsoft WordOffice 365JavaX-Content-Type-OptionsAdobe FontsDraftpress HFCM.

What is GreyCastle Security's email format?

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GreyCastle Security's email format typically follows the pattern of FLast@greycastlesecurity.com. Find more GreyCastle Security email formats with LeadIQ.

When was GreyCastle Security founded?

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GreyCastle Security was founded in 2011.

GreyCastle Security

Computer and Network SecurityNew York, United States51-200 Employees

Our mission is to prepare and protect clients from emerging
cyber threats through the continuous availability
of effective solutions that are rooted in alignment,
quality, and satisfaction.

The Grey Castle Difference:

๐‚๐ฒ๐›๐ž๐ซ-๐…๐จ๐œ๐ฎ๐ฌ๐ž๐
Cybersecurity is all we do. All day. Every day. Preparing and protecting
your data, your employees, and your reputation against emerging cyber
threats are our highest priority.

๐’๐ข๐ฆ๐ฉ๐ฅ๐ข๐Ÿ๐ข๐œ๐š๐ญ๐ข๐จ๐ง
You donโ€™t need to be a cybersecurity expert to work with us. We work
with you to easily position and communicate a cybersecurity roadmap
to your Board, your auditors, and other stakeholders.

๐‘๐ž๐š๐๐ข๐ง๐ž๐ฌ๐ฌ
Weโ€™re committed to providing proactive cybersecurity solutions that
deliver the highest degree of cyber readiness to eliminate future threats.

๐’๐ญ๐š๐ง๐๐š๐ซ๐๐ฌ-๐๐š๐ฌ๐ž๐ ๐€๐ฉ๐ฉ๐ซ๐จ๐š๐œ๐ก (๐๐ซ๐จ๐ฏ๐ž๐ง ๐๐ซ๐จ๐œ๐ž๐ฌ๐ฌ)
Our processes surpass recognized industry standards that you, your
auditors and your business partners can rely upon.

Section iconCompany Overview

Headquarters
185 Jordan Road, Suite 3
Phone number
SIC Code
7381 - Detective, Guard, and Armored Car Services
NAICS Code
5415 - Computer Systems Design and Related Services
Founded
2011
Employees
51-200

Section iconFunding & Financials

  • $1M$10M

    GreyCastle Security's revenue is estimated to be in the range of $1M$10M

Section iconFunding & Financials

  • $1M$10M

    GreyCastle Security's revenue is estimated to be in the range of $1M$10M

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