Insights

Acquisition Context GreyCastle Security was acquired by DeepSeas in December 2023, signaling potential shifts in vendor focus, integration priorities, and possible access to a broader client base or strategic resources that could open co-sell or transition-focused sales opportunities.

Managed SOC Growth The launch of Managed Security Operations Center in 2021 indicates experience with outsourced monitoring and incident response services, suggesting upsell opportunities with clients seeking mature 24/7 security operations, threat detection, and incident management.

Strong Industry Position Repeated recognition as a fast-growing private company and Best Places to Work highlights credibility and a talent pool capable of delivering high-quality cybersecurity services, which can reassure prospective enterprise clients and enable premium pricing for security programs.

Technology Stack Fit Core tech stack includes CrowdStrike, AWS, Microsoft Azure, PostgreSQL and Google Workspace, aligning with typical enterprise security environments and offering clear paths for integrated security services, CSPM/EDR coverage, and cloud-native protections.

Engagement Footprint Partnerships and community engagement such as Blacks In Cybersecurity and prior board/partner communications suggest a proactive approach to collaboration and inclusion, presenting opportunities for co-marketing, channel partnerships, and access to diverse security buyer networks.

Similar companies to GreyCastle Security

GreyCastle Security Tech Stack

GreyCastle Security uses 8 technology products and services including Adobe Creative Cloud, Amazon Web Services, PostgreSQL, and more. Explore GreyCastle Security's tech stack below.

Media & News

GreyCastle Security's Email Address Formats

GreyCastle Security uses at least 4 email formats:
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

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.

How much revenue does GreyCastle Security generate?

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As of July 2026, GreyCastle Security's annual revenue is estimated to be $1M - $10M.

What is GreyCastle Security's NAICS code?

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GreyCastle Security's NAICS code is 5415 - Computer Systems Design and Related Services.

How many employees does GreyCastle Security have currently?

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As of July 2026, GreyCastle Security has approximately 69 employees across 1 continents, including North America. Key team members include Chief Privacy Officer: D. R., Chief Financial Officer: H. C. and Chief Operating Officer: T. H. 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 Adobe Creative Cloud, Amazon Web Services, PostgreSQL, Google Workspace, CrowdStrike, Microsoft Azure, Salesloft and Microsoft Teams.

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 logo

GreyCastle Security

Computer and Network SecurityNew York, United States51-200 Employees

GreyCastle Security operates in the computer and network security sector, focusing on protecting clients from emerging cyber threats through solutions designed for continuous availability, alignment, quality, and satisfaction. The company emphasizes a cyber-focused approach, aiming to safeguard data, employees, and organizational reputation, and it strives to simplify cybersecurity planning so boards, auditors, and stakeholders can understand and communicate a roadmap.
Headquartered in Troy, New York, GreyCastle Security serves organizations seeking proactive, standards-based security practices. Its position in the industry centers on delivering consistent readiness and a proven process that exceeds common industry benchmarks, with services and programs that support ongoing cyber defense and compliance requirements.

Section iconCompany Overview

Phone number
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

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