Research explained
NCSC warns against treating prompt injection as another SQL injection problem
The agency recommends secure system design rather than assuming one input-handling technique will eliminate the risk.
What happened
The UK National Cyber Security Centre warned that prompt injection differs from SQL injection in a crucial respect: current language models do not provide the same clear separation between instructions and untrusted data.
The warning is general security guidance, not notice of a specific breach. It argues against assuming that a single filter or an analogy with parameterized database queries can completely solve the problem.
Design for the possibility that an assistant will misinterpret hostile content. Limit what it can access, require approval for consequential actions and ensure failures remain contained. Evaluate controls through realistic application workflows rather than prompt-only tests.
Next step
Constrain assistant permissions and test the consequences of prompt-injection failures.
What remains unknown
- Open question
- The sources reviewed do not establish whether your deployment was exploited.
Source references
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NCS