AI Interaction Firewall vs. Legacy DLP
Data Loss Prevention was built for files and email — pattern-matching attachments and messages on their way out. A prompt is different: free text, semantic, sent to a model that talks back. AI interactions are a new egress path legacy DLP sees only as opaque traffic.
Built for AI
AI Interaction Firewall
Reads the prompt and the response semantically — classifies intent, redacts the sensitive parts while letting the rest through, routes to a local or cloud model, and logs every interaction.
Built for files & email
Legacy DLP
Scans documents, attachments and messages with patterns, regex and fingerprints, then blocks or quarantines matches. Effective for classic exfiltration channels — but blind to the content and intent of an AI prompt.
| AI Interaction Firewall | Legacy DLP | |
|---|---|---|
| Primary job | Govern what your people send to AI | Stop file & email exfiltration |
| Built for | Free-text prompts & AI responses | Files, attachments, email |
| Detection method | Semantic — language & intent | Patterns, regex, fingerprints |
| Handles a prompt | Understands it & redacts part of it | All-or-nothing block, if at all |
| Routes local vs cloud model | Yes — per policy | No concept of it |
| Rehydrates redacted data in the response | Yes | No |
| Audit of AI interactions | Yes — tamper-evident, per prompt | File & email events |
| Coverage of AI egress | Native | Blind spot |
Keep your DLP for what it does well: files, attachments and email leaving through classic channels.
Add an AI Interaction Firewall for the channel DLP cannot see: free-text prompts and responses flowing to AI models.
Run them together to close the gap — DLP for documents, the Interaction Firewall for AI.
Common questions
- Can't my DLP just block AI sites?
- Blocking the domain blocks the productivity too — and people route around it via personal devices and new tools. An AI Interaction Firewall governs the interaction instead of banning it: redact the sensitive parts, allow the safe ones, log all of it.
- Why can't DLP redact a prompt?
- DLP is pattern/regex on structured content. A prompt is free text where the sensitive entity and the legitimate request are interleaved. Redacting one token while preserving a usable prompt — and rehydrating the answer — needs semantic understanding DLP does not have.
- Is an AI Interaction Firewall a replacement for DLP?
- No — it is the AI-shaped complement. DLP covers files and email; the Interaction Firewall covers the AI egress path. Most regulated organizations need both.
The full category, defined
Read what an AI Interaction Firewall is, how it works, and how it compares to AI gateways and AI security firewalls.