Rule4
Cybersecurity consulting and penetration testing for organizations, from vCISO and incident response to OT/ICS and AI security
Highlights
- New on EvolcAdded 2026-11-13
About Rule4
Rule4 provides cybersecurity strategy, assessment, testing and engineering services. Offerings include vCISO, application and API penetration testing, incident response and forensics, cloud and network security, OT/ICS security, compliance with frameworks such as ISO 27001, PCI DSS and NIST, privacy assessments, and AI security and governance.
Its customers are organizations that need security advice or testing; the company states it has earned the trust of more than 250 organizations. It describes itself as not a value added reseller: it designs and delivers tailored solutions rather than reselling products, and its revenue comes from these services.
Rule4 is based in Boulder, Colorado, and lists a site lead in Ireland among its team. Its open positions are for cybersecurity engineer and associate engineer roles in Boulder.
Product: Cybersecurity services including vCISO, penetration testing, incident response, OT/ICS security, and compliance and privacy assessments.
Jobs at Rule4
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Website technologies
Tools and platforms detected on this company’s website, grouped by purpose. Dates record when Evolc observed them.
Content management
- WordPressHigh confidence
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- Website resourcedeclared script/iframe or software asset
Forms
- Contact Form 7High confidence
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- Website resourcedeclared script/iframe or software asset
- Google reCAPTCHAHigh confidence
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- Website resourcedeclared script/iframe or software asset
Frontend frameworks
- BootstrapHigh confidence
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- Website resourcedeclared script/iframe or software asset
- jQueryHigh confidence
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- Website resourcedeclared script/iframe or software asset
Hosting
- ApacheHigh confidence
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- Response headerserver
- Response headerserver
- Response headerserver
- AWSHigh confidence
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- Response headerx-amz-cf-id
- Response headerx-amz-cf-id
- Response headerx-amz-cf-id
Recruiting
- Breezy HRMedium confidence
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Detection evidence
- Page markupsoftware structure signature
Website detection does not establish a paid subscription or company-wide use. Tools loaded after consent or sign-in may be missed. “No longer observed” does not prove the company stopped using a tool.