# Castle Haven Solutions

> Castle Haven Solutions is a Miami cybersecurity consultancy for businesses first and homes second: Miami growth security assessments for emerging companies, vendor assurance audits, security assessments and penetration testing, fractional CISO and compliance, new office and building systems security, and executive residence security. On-site across Miami-Dade, Broward, and Palm Beach, and remote engagements anywhere.

Key facts:
- Brand: Castle Haven Solutions. Legal entity: Castle Haven Systems Inc. Based in Miami, Florida.
- Services: Miami Growth Security Assessment; Vendor assurance audits; Security assessments and penetration testing; Fractional CISO and compliance; New office and building systems security; Executive residence security.
- Engagements: Business Security Assessment, Fractional CISO, Executive Residence Audit. Approach: Assess, Harden, Re-check.
- Frameworks: NIST CSF and CIS Controls for assessments; audit readiness for SOC 2, HIPAA, and PCI DSS.
- Growth focus: financial and investment firms in Miami. SEC Regulation S-P (2024 amendments) requires broker-dealers, registered investment advisers, investment companies, and transfer agents to oversee their service providers through due diligence and monitoring, so their vendors face security review before they are hired.
- Who we work with: Financial and investment firms, Professional services, Healthcare and dental, Hospitality, Real estate and property management, Retail and restaurants, Executive residences.
- Founder: Frank Castellano. His security engineering career includes Bloomberg's financial software, the National Security Agency (NSA), and Amazon Web Services (AWS), including vulnerability management across more than a million devices, 24/7 incident response, and audits under FedRAMP, NIST, ISO, and Cyber Essentials Plus. Credentials: CISSP; Certified Ethical Hacker; Master of Technology Management in Information Security, Georgetown University.
- Service area: on-site across Miami-Dade, Broward, and Palm Beach counties; remote engagements anywhere. Free consultation.
- Contact: https://www.castlehavensolutions.com/#contact

## Pages
- [Home](https://www.castlehavensolutions.com/): Cybersecurity consulting for businesses and homes in South Florida: Miami growth-stage security assessments, vendor assurance audits, security assessments, penetration testing, fractional CISO, compliance readiness, new office and building systems security, and executive residence security. Led by a CISSP security engineer in Miami.
- [Field Notes](https://www.castlehavensolutions.com/blog): Plain-language security notes for businesses and homes.

## Field Notes
- [Ransomware hits the calendar, not just the computers](https://www.castlehavensolutions.com/blog/ransomware-readiness): The outcome is decided before the attack, by backups, segmentation, and a plan on paper. (October 8, 2026, The Castle Haven team)
- [When the attacker already has the password](https://www.castlehavensolutions.com/blog/mfa-fatigue): Push prompts you weren't expecting are the whole attack, not a glitch. (September 30, 2026, Frank Castellano)
- [What a part-time security chief actually does](https://www.castlehavensolutions.com/blog/fractional-ciso): Most small firms don't need a full-time CISO. They need the decisions one would make. (September 24, 2026, The Castle Haven team)
- [Write the plan before you need the plan](https://www.castlehavensolutions.com/blog/incident-response-plan): In a real incident, the thing that fails first is knowing who does what. (September 3, 2026, Frank Castellano)
- [Build the Foundation First: Every Transformation Is a Security Decision](https://www.castlehavensolutions.com/blog/foundation-first): Security added at the end of a project is a review. Security added at the start is a foundation. (August 14, 2026, Frank Castellano)
- [Your house is now part of the company network](https://www.castlehavensolutions.com/blog/home-office-security): The weakest device on your home Wi-Fi is now a path into your work. (July 30, 2026, The Castle Haven team)
- [An AI Broke Out of Its Test to Steal the Answers. Here's the Lesson for Miami Businesses.](https://www.castlehavensolutions.com/blog/ai-test-breakout-lesson): What a model's escape from its own exam teaches a business about the doors it leaves open. (July 22, 2026, Frank Castellano)
- [Cameras watch the house. Who watches the cameras?](https://www.castlehavensolutions.com/blog/smart-home-privacy): A camera you can see from your phone is a camera someone else might reach too. (July 9, 2026, Frank Castellano)

## Optional
- [Full site text for AI assistants](https://www.castlehavensolutions.com/llms-full.txt)