Shield helps teams deploy AI safely, with clear controls, real-time protection, and AI-native discoverability.
Your attorneys research with AI. The vendor never sees the case.
Purfect Shield sits between your legal teams and every LLM they use — tokenizing privileged content and client data before it leaves your network, rehydrating responses transparently, and producing a hash-chained audit trail that satisfies ABA ethics opinions, client security assessments, and vendor risk questionnaires.
$10K/$25K/$45K, two PO line items, published and flat — no per-seat or per-token meter.
The delivery pipeline that keeps client confidences, case strategy, and privileged communications off the wire — from attorney prompt to model response and back.
Source code delivered at handoff · You audit, build, and sign · No vendor keys or telemetry ever
The Reality
Your attorneys are already using LLMs. The question is whether privileged content is on the wire.
Attorney-Client Privilege in Prompts
Your attorneys paste case strategy, client confidences, and privileged communications into LLM prompts — with no structural guarantee that the vendor isn't logging or training on that data.
Client Confidentiality Risk
Client names, matter details, settlement figures, and PII appear in LLM conversations daily. ABA Model Rules require competence in technology — most firms can't demonstrate it for AI.
Vendor Risk Questionnaires
Every LLM vendor demands a security assessment. Your IT team spends weeks filling out questionnaires while attorneys keep pasting privileged data into unvetted tools.
Law Firm Security Assessments
Corporate clients increasingly audit their outside counsel's AI usage. Without a demonstrable tokenization layer, firms risk losing major engagements over LLM security concerns.
The Fix
No vendor keys. No vendor servers. No telemetry.
Purfect Shield runs on your infrastructure. You compile it yourself. You own the source. Attorney-client privilege is never at risk.
Privileged Content Tokenized at the Gateway
Client names, case citations, settlement amounts, and strategy documents are swapped for stable placeholders before any prompt reaches an LLM provider — privilege is never waived.
No Vendor Keys. No Vendor Servers. No Telemetry.
Purfect Shield runs entirely on your infrastructure. Compile it yourself. No API keys to third parties, no telemetry exfiltration, no vendor that can subpoena your prompts.
Audit Trail for Client Inquiries
Every redaction is hash-chained and append-only. When a corporate client asks how their data is protected, you produce cryptographically verifiable evidence — not a policy document.
Compile-Your-Own Pipeline
Source code delivered at handoff. Your IT team or trusted third party audits, builds, and signs the binary. No black boxes, no trust-me architecture, no vendor lock-in.
See it on your legal workflows.
We'll deploy Shield in front of your legal research and document review LLM tools, walk your IT and ethics teams through the audit trail, and show you exactly how privileged content is tokenized before it ever reaches a model. One day. Your infrastructure. You own the source.
Fixed-price engagement · Source code at handoff · No subscription
Intake Portal
Let's Build.
Submit your technical details and we will formulate a production scope, architectural dependencies, and exact model selection profiles.
48-Hour Response SLA
Every request is routed directly to a principal systems engineer.
Zero Cloud Risk
All contracts guarantee strict IP ownership and security boundary isolation.
FAQ
Legal LLM Security Questions
Does using Shield waive attorney-client privilege?
No. Shield tokenizes privileged content before it reaches any LLM provider — the vendor never sees client confidences, case strategy, or privileged communications. Because the data is structurally prevented from leaving your network in identifiable form, privilege is preserved. No third-party access means no waiver.
Can Shield satisfy client security assessments?
Yes. Shield provides cryptographically verifiable evidence — not policy documents — that client data is protected. The hash-chained audit trail demonstrates exactly what was tokenized and when. Corporate clients auditing outside counsel's AI usage find this far more compelling than a security questionnaire response.
Does Shield require a vendor risk assessment?
Because Shield runs entirely on your infrastructure with no vendor keys, no vendor servers, and no telemetry, the vendor risk surface is near-zero. You compile the binary yourself. You hold all keys. There is no Purfect Shield cloud to assess — the typical 200-question vendor risk questionnaire collapses to a one-page architecture letter.
Who holds the encryption keys?
You do. Shield's audit log writes to your storage with your encryption keys under your retention policy. Enterprise tier uses your S3 bucket with your KMS keys. Purfect AI never holds your keys, your logs, or access to your infrastructure.
Can our IT team audit the source code?
Yes. Full Go source code is delivered at handoff. Your IT team or trusted third party can audit, build, and sign the binary. The delivery pipeline is designed for legal environments where black-box software is unacceptable — compile-your-own is the standard, not an option.
How does the audit trail work for client inquiries?
Every tokenization event is logged as a hash-chained, append-only JSONL record. When a corporate client asks how their data was protected, you produce the audit trail showing exactly what categories were tokenized and when — cryptographic proof, not a policy statement. Records are tamper-evident: modifying or deleting any entry breaks the chain.