Shield helps teams deploy AI safely, with clear controls, real-time protection, and AI-native discoverability.
Your traders paste deal data into LLMs. We structurally prevent exfiltration.
Purfect Shield sits between your financial teams and every LLM they use — tokenizing PANs and deal data before it leaves your network, rehydrating responses transparently, and producing a hash-chained audit trail that satisfies PCI-DSS, GLBA, and SOX controls.
$10K/$25K/$45K, two PO line items, published and flat — no per-seat or per-token meter.
The three-stage pipeline that keeps PANs, deal data, and financial identifiers off the wire — from financial prompt to model response and back.
PANs and deal data tokenized at the gateway · Model sees only placeholders · Responses rehydrated for your teams
The Reality
Your trading and support teams are already using LLMs. The question is whether financial data is on the wire.
PCI-DSS Tokenization Gap
Your support and trading teams paste cardholder data into LLM prompts for analysis — and PCI-DSS requires that PANs never reach the model provider in cleartext.
Trading Desk LLM Usage
Traders copy deal memos, counterparty details, and proprietary strategy docs into consumer LLM tools — with no audit trail and no structural prevention.
GLBA Safeguards Exposure
Customer financial information flows through LLM prompts daily. GLBA requires safeguards that most organizations haven't extended to AI tooling.
SOX Control Gaps
When material financial data is analyzed via LLM, SOX §404 controls must cover those data flows. Most firms have no controls around LLM prompt data.
The Fix
Purfect Shield: your financial data never leaves your network.
Deployed on your infrastructure. No cloud. No subscription. You own the source.
Tokenize PANs Before They Reach the Model
Card numbers, account numbers, and financial identifiers are swapped for stable placeholders at the gateway — the LLM provider never sees real financial data.
Trading Desk Data Isolation
Deal data, counterparty names, and strategy documents are structurally prevented from leaving your network. Traders get AI assistance without data exfiltration risk.
GLBA & SOX Audit Trail
Every transformation is logged as a hash-chained JSONL event. Demonstrate to auditors exactly what data was protected — and prove nothing sensitive left your perimeter.
Opaque Mode for Trading Desks
For your most sensitive deal and strategy data, Shield can operate in opaque mode — tokenize with no retained mapping, no rehydration possible.
🕶️
Opaque Mode — for your most sensitive trading and deal data
Some trading floor and M&A workflows carry data so sensitive that even the local placeholder mapping is too much. Opaque mode tokenizes deal terms, counterparty names, and strategy documents with no retained mapping and no rehydration possible — the model works with fully sanitized input, and your audit trail still proves what was redacted and when.
Zero retained mappingFully sanitized model inputFull audit trail preservedPer-endpoint configurable
Compliance Evidence
PCI-DSS, GLBA, SOX — satisfied with hash-chained evidence.
Every redaction becomes a hash-chained event in an append-only JSONL log. Modify or delete any record and the chain breaks detectably — regulator-ready, tamper-evident evidence.
PCI-DSS Req. 3
Protect Stored Cardholder Data
PANs are tokenized at the gateway before they reach any model provider — satisfying PCI-DSS tokenization requirements with a complete audit trail of every transformation.
GLBA Safeguards Rule
Customer Information Security
The hash chain ensures customer financial information is protected at every access point. Any modification is cryptographically detectable — satisfying GLBA requirements.
SOX §404
Internal Controls Over Financial Reporting
When material financial data flows through LLM tools, Shield provides the controls evidence auditors require — attributable, timestamped, and cryptographically linked to its predecessor.
Deployment
On your infrastructure. In one day.
1
Gateway deployed
Go gateway on localhost:6767. Your financial teams' LLM tools route through Shield automatically via BASE_URL.
2
Financial filter pack activated
Patterns for PANs, account numbers, deal data, and financial identifiers — tuned to your data shapes and compliance requirements.
3
Audit sidecar running
Hash-chained JSONL events ship to local sidecar. Dashboard on localhost:6768 shows real-time redaction stream with PCI-DSS and GLBA tagging.
4
Compliance team trained
90-minute session with your compliance officers — evidence export, retention runbook, regulator-ready documentation for PCI-DSS, GLBA, and SOX.
See it on your financial workflows.
We'll deploy Shield in front of your trading and support LLM tools, walk your team through the audit trail, and show you exactly how financial data 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
Financial Services LLM Security Questions
Does Shield satisfy PCI-DSS tokenization requirements?
Yes. PANs and payment tokens are tokenized at the gateway before they reach any model provider. The hash-chained audit trail provides cryptographically verifiable evidence that cardholder data never left your perimeter in cleartext — satisfying PCI-DSS tokenization and audit requirements.
How does Shield handle SOX §404 controls?
Shield's append-only, hash-chained audit log provides a complete, tamper-evident record of every LLM interaction involving material financial data. Auditors can verify data lineage, access patterns, and transformation history — satisfying SOX control documentation requirements without additional tooling.
Can Shield protect trading desk deal data?
Yes. Deal memos, counterparty details, and proprietary strategy documents are structurally prevented from leaving your network. Opaque mode is available for maximum sensitivity — tokenize with no retained mapping, no rehydration possible. Traders get AI assistance with zero exfiltration risk.
Does Shield meet GLBA Safeguards Rule requirements?
Yes. Shield tokenizes customer financial information before it reaches any model provider and produces a hash-chained audit trail demonstrating structural data protection. The Safeguards Rule requires 'protecting against unauthorized access' — Shield provides this at the network boundary without per-application integration.
Is Shield deployed on-premises or as SaaS?
Shield runs entirely on your infrastructure — on-prem servers, private cloud, or VPC. It is a single Go binary deployed on localhost:9090. There is no Purfect Shield cloud, no SaaS component, no telemetry. You hold all keys and control all data paths.
How quickly can we deploy in a financial environment?
Foundation deploys in one day including threat model workshop and PCI-DSS-aligned filter pack. Compliance (with audit sidecar) deploys within one week. Enterprise (federated across desks and CI pipelines) deploys in approximately three weeks.