Insights

Security Focused Solutions Castle specializes in blocking bots, account takeovers, transaction fraud, and spam prevention, making it an essential partner for businesses requiring robust cybersecurity measures. Companies in finance, e-commerce, and digital services looking to enhance their fraud prevention capabilities represent a prime target for tailored security solutions.

Growing Market Potential The company's revenue range from one million to ten million suggests an emerging business likely seeking scalable security solutions to support growth. Engaging mid-sized firms in technology-driven sectors with expanding digital footprints presents an opportunity for upselling and long-term partnerships.

Tech Stack Compatibility Castle's integration with popular tools like Zendesk, SendGrid, and Google Fonts API indicates a focus on seamless deployment within existing digital ecosystems. Targeting organizations using these platforms or similar security-integrated services can facilitate quicker adoption and integration of Castle's offerings.

Industry Alignment Being in the software development industry in Brooklyn places Castle among innovative, tech-savvy companies that prioritize cybersecurity. Developing relationships with local startups and established developers can unlock opportunities for collaborative growth in cybersecurity solutions tailored to their needs.

Market Expansion Opportunities The company's recent news mentions involvement in sectors like real estate and copper mining, indicating potential diversification or market expansion activities. Targeting clients in these or similar resource-intensive industries can open avenues for customized security solutions to protect critical digital assets.

Castle Tech Stack

Castle uses 8 technology products and services including Zendesk, SendGrid, Google Fonts API, and more. Explore Castle's tech stack below.

  • Zendesk
    Documentation Tools
  • SendGrid
    Email Delivery
  • Google Fonts API
    Font Scripts
  • Lucide
    Font Scripts
  • Element UI
    Javascript Frameworks
  • JSON-LD
    Javascript Frameworks
  • Castle
    Security
  • Semantic UI
    Web Frameworks

Media & News

Castle's Email Address Formats

Castle uses at least 1 format(s):
Castle Email FormatsExamplePercentage
First.Last@castle.ioJohn.Doe@castle.io
42%
First@castle.ioJohn@castle.io
8%
First.Last@castle.ioJohn.Doe@castle.io
42%
First@castle.ioJohn@castle.io
8%

Frequently Asked Questions

Where is Castle's headquarters located?

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Castle's main headquarters is located at Brooklyn, New York 11249 US. The company has employees across 5 continents, including North AmericaEuropeAsia.

What is Castle's stock symbol?

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Castle is a publicly traded company; the company's stock symbol is CCI.

What is Castle's official website and social media links?

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Castle's official website is castle.io and has social profiles on LinkedInCrunchbase.

What is Castle's NAICS code?

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Castle's NAICS code is 5112 - Software Publishers.

How many employees does Castle have currently?

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As of October 2025, Castle has approximately 41 employees across 5 continents, including North AmericaEuropeAsia. Key team members include Ceo & Co-Founder: J. B.Vp Of Operations: L. R.Head Of Legal And Ai Governance: A. W.. Explore Castle's employee directory with LeadIQ.

What industry does Castle belong to?

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Castle operates in the Software Development industry.

What technology does Castle use?

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Castle's tech stack includes ZendeskSendGridGoogle Fonts APILucideElement UIJSON-LDCastleSemantic UI.

What is Castle's email format?

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Castle's email format typically follows the pattern of First.Last@castle.io. Find more Castle email formats with LeadIQ.

When was Castle founded?

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Castle was founded in 2015.

Castle

Software DevelopmentNew York, United States11-50 Employees

Castle lets you block bad bots, account takeovers, transaction fraud, and spam — all without the hassle of CAPTCHAs.

Section iconCompany Overview

Headquarters
Brooklyn, New York 11249 US
Website
castle.io
Stock Symbol
CCI
NAICS Code
5112 - Software Publishers
Founded
2015
Employees
11-50

Section iconFunding & Financials

  • $1M$10M

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

Section iconFunding & Financials

  • $1M$10M

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

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