---
title: "Reyse - Cybersecurity Consulting | AI Security & CISO Services Paris"
description: "Interim & fractional CISO, AI security and SOC 2, ISO 27001 & GDPR compliance for startups and scale-ups. Cybersecurity consulting from Paris, working globally."
image: https://reyse.ai/og-image.png
---

# Reyse: Security That Scales With You

> Interim & fractional CISO, AI security and SOC 2, ISO 27001 & GDPR compliance for startups and scale-ups. Cybersecurity consulting from Paris, working globally.

Canonical page: https://reyse.ai/

Interim CISO, AI security, and compliance for tech companies that move fast.

## Security stops being a technical detail the moment someone asks you to prove it.

That moment arrives with an enterprise security review, investor due diligence, an AI launch, an incident or a board asking what AI changes for your security. We help you meet it with a clear owner, a plan and answers you can defend.

## Services: Three services, run as one security program.

### Interim CISO

Senior security leadership, without the full-time hire, as an interim or a part-time (fractional) CISO. We own the program, set the roadmap and report to your board until your own team takes over.

Reporting line: the interim CISO reports to the board and leadership and works across engineering, product, IT and operations, and sales and legal.

Scope: Strategic security planning, Team building, Board reporting, Crisis management.

### AI security

Security for the AI you build, and against attackers who use AI. We protect models, pipelines and data, set the rules for AI use, and shorten the time from flaw to fix.

AI pipeline risks: data poisoning, training supply chain, model extraction, and prompt injection and data leakage at inference.

Scope: Model security, ML pipeline protection, AI governance, AI risk assessment, AI-enabled attack readiness.

### SOC 2, ISO 27001 & GDPR

We scope the work, close the gaps and prepare the evidence, then keep you ready after the audit. Independent auditors issue the SOC 2 report or ISO 27001 certificate.

Audit path: scope, gap assessment, remediation, policies and evidence, then the independent audit, which is carried out by an external auditor.

Scope: SOC 2 Type 2, ISO 27001, GDPR, Security architecture, Vendor management.

### Security operations (also in scope)

- Incident response
- Threat intelligence
- Security monitoring
- Risk assessment
- Security audits

## Approach: Rigor, without the bureaucracy.

Our team has built security frameworks for large-scale AI infrastructure serving millions of users. We bring that discipline to growing companies.

- **Risk before checklists.** Frameworks are the floor. We start from what could hurt the business.
- **Guardrails, not gates.** Good controls let teams move faster. Bad ones get bypassed.
- **Plain language.** Reporting your board can read: the risks, the decisions and the trade-offs.

## How we work: From assessment to a program you own.

1. **Assess.** Where you stand, including what you have already promised customers and investors.
2. **Plan.** A roadmap ranked by business risk: what to fix now, and what can wait.
3. **Build.** We implement alongside your team and report progress to leadership and the board.
4. **Hand over.** We document everything and help you hire. The work is done when your team no longer needs us.

## FAQ: The short answers.

### What is Reyse?

Reyse is a Paris-based cybersecurity consulting firm for startups and scale-ups. Our team has built security frameworks for large-scale AI infrastructure serving millions of users.

### What cybersecurity services does Reyse offer?

Reyse offers three services: interim or fractional CISO, AI security, and compliance for SOC 2 Type 2, ISO 27001 and GDPR. Security operations are also in scope, from incident response and monitoring to audits.

### What is the difference between an interim and a fractional CISO?

An interim CISO fills the role for a defined period, for example while you hire, or through an audit, a deal or an incident. A fractional CISO is part-time and ongoing, for companies that need senior security leadership but not a full-time executive. Reyse does both.

### Does Reyse specialize in AI security?

Yes, on both sides: the AI you build, and the AI used against you. For teams building or shipping AI features, it covers model security, ML pipeline protection, AI governance, data privacy and AI risk assessment. For the whole company, it means being ready for attackers who use AI.

### How should a company prepare for attackers who use AI?

AI has not changed what good security is. It has shortened the time you have. We start with what an attacker can reach, from your own systems and code to suppliers and unsupported software. We help your team shorten the time from a published flaw to its fix. Where it helps, we test your code and systems with current AI tools, under controlled conditions and with people checking every finding, so you find the flaws first. We make identity hard to fake, so a convincing call or video is not enough to move money or reset access. And we rehearse the response with leadership before it is needed.

### What compliance frameworks does Reyse help with?

SOC 2 Type 2, ISO 27001 and GDPR. We run the gap assessment, lead remediation and prepare the evidence auditors expect, then help you stay compliant. Independent auditors, not Reyse, issue SOC 2 reports and ISO 27001 certificates.

### How much does an engagement cost?

Every engagement is scoped to your situation, so there is no fixed price list. Scope and fees are discussed on the first 30-minute call, which is at no cost.

### Where is Reyse located?

Reyse is based in Paris, France, and works with companies globally, remotely and on-site, in English and French.

### How can I contact Reyse for cybersecurity consulting?

Email hello@reyse.ai, or book a 30-minute call from the contact page. We reply within 24 hours.

## Contact

Tell us where you stand. We’ll tell you what we’d do first.

A 30-minute conversation. Bring your deadlines and your questions.

- Book a 30-minute call: https://calendar.app.google/4s6Wds2RzSDcxXtu8
- Email: hello@reyse.ai
- Response: Within 24 hours
- Based in: Paris, France
- Coverage: Remote and on-site, globally
- Languages: English and French
- First call: 30 minutes, at no cost

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