Guides
Every guide to AI Breach Response
Start with the main guides, then go deeper on the parts that apply to you.
Last reviewed against legislation.gov.uk, National Cyber Security Centre and OWASP GenAI Security Project. Sources
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The main guides
What to do
A practical order of work for UK organisations after data leaks through an AI tool: awareness, containment, scoping, reporting, supplier and plan.
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Timeline
A dated, sourced timeline of public AI-related data exposures and the UK guidance that followed, from the ChatGPT bug to the DeepSeek database.
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Questions
Sourced answers on reporting an AI data breach, the 72 hour rule, telling people, supplier breaches, leaked keys and what UK organisations should do.
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About this site
AI Breach Response is published by CyPro Consulting Ltd, a UK cyber security consultancy, to give a clear, sourced account of responding to AI data leaks.
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Your product or situation
First response
What to do first when data has leaked through an AI tool: record awareness, stop the exposure, replace secrets, scope the data and decide on reporting.
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Response plan
What to add to your incident response plan for AI tools: owners, data stores, supplier contacts, decision rights and the NCSC's advice for leaders.
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Reporting
When and how a personal data breach involving AI tools must be notified under UK GDPR, what the notice contains and what to record if you do not report.
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Telling people
When individuals must be told about a personal data breach involving AI tools, what the message should say and the exceptions the law allows.
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Supplier breach
What to do when an AI supplier reports a breach affecting your data: questions to ask, the processor's duty, and how to protect your own timeline.
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Leaked keys
How to respond when API keys, secret keys or storage tokens linked to AI tools have leaked: what to revoke, what to check and how to prevent a repeat.
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Exposed storage
How to respond to an open AI database, log store or storage account: closing access, finding what was reachable and checking for misuse.
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Staff and AI tools
How to respond when staff have entered personal or confidential data into a public AI tool: scoping, supplier requests, reporting and what to change.
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Output leaks
What to do when an AI tool reveals one person's data to another, or discloses confidential content in its answers: scoping, containment and fixes.
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Examples
Four documented AI-related data exposures, ChatGPT, Samsung, Microsoft and DeepSeek, with the cause of each and the lesson for UK organisations.
Read the guideHow CyPro can help
Need a hand working through this?
Finding out whether an incident reaches you is one job. Checking your own systems, tightening access and briefing the board are several more. CyPro's responders and consultants can take any of them on.
Incident response
If you may already be compromised, our responders contain it, preserve the evidence, find out what was touched and get you running again safely.
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24/7 security monitoring
Our SOC analysts watch your systems day and night for the signs of an attack in progress: unexpected processes, new outbound connections, logins that do not fit.
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Fractional CISO for the board
A senior security lead who advises the board on what to fix first, what to accept and what to tell customers, and owns the decision record.
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Penetration testing
A focused test of your systems and the controls around them, so you know they hold before an attacker finds out for you.
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Hardening and segmentation
Our consultants put the controls in place that limit the damage when something is missed: firewall rules, network isolation and tighter admin access.
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Vulnerability scanning
Find every internet-facing system you run, including the forgotten ones, and see which are still on a vulnerable build.
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Worried this affects you?
When data has leaked through an AI tool, its logs or its storage, the early decisions shape what you must report and to whom. An incident response team helps you contain the exposure, establish what was involved and prepare your notifications.