Short Answer:
Minimize sensitive data, choose secure deployment boundaries, lock down access and retention, configure privacy-by-default, and continuously test/monitor. Map your controls to recognized standards (NIST/ISO/HIPAA/ICO). Then apply the same controls concretely in CustomGPT.ai (retention, anonymization, whitelisting, SSO/2FA, scoped API keys, monitoring) to keep client data safe.
Classify and minimize data before it touches AI
Identify personal, sensitive, and regulated data (e.g., PII/PHI). Apply data minimization and purpose limitation: only send what is necessary for the task, and prefer synthetic or masked samples during testing. Maintain data maps so you can prove why each field is used.
Identify personal/sensitive/regulated data
Catalog data elements by sensitivity and legal basis. If you can’t justify a field, don’t send it. Use DLP/redaction in preprocessing pipelines and sanitize logs downstream.
Strip or obfuscate identifiers; send the least necessary
Use tokenization, hashing, or anonymization for identifiers; prefer aggregates over raw values. Keep raw data in your systems, not in prompts to keep client data safe.
Choose the right deployment boundary
Decide whether to run models locally/VPC or use a vendor. Require TLS in transit, encryption at rest, and customer-managed keys where available. Isolate tenants and scope retrieval to authorized sources. Align with ISO/IEC 27001 for ISMS and ISO/IEC 27701 for privacy management.
Local/VPC vs vendor-hosted; encryption & key handling
Assess data egress, residency, and secrets management. For vendor-hosted, review SOC posture and data-use policies; ensure inference data isn’t used for training by default.
Isolation and data-scoping in retrieval/RAG pipelines
Restrict indexes/collections per client; prevent cross-client leakage with per-tenant namespaces and access checks.
Configure privacy & logging
Set tools to “use my data only” where supported; turn off model training on your inputs. Limit telemetry and disable unnecessary analytics. Rotate logs, scrub PII, and restrict who can view prompts/outputs. Map these controls to your risk register.
Opt for “your data only” inference; restrict telemetry
Prefer closed-book or “my data only” modes for customer-facing assistants. Keep model/vendor analytics minimal and documented.
Control prompt/output visibility, caching, and logs
Define retention windows, cache scopes, and viewer roles. Export and purge regularly.
Manage access and retention
Enforce SSO/MFA, role-based access, and least-privilege API keys. Set strict retention schedules for prompts/outputs; enable export and verifiable deletion. Maintain audit trails for access and changes.
Roles, MFA/SSO, scoped API keys
Provision just-in-time access where possible; set expirations for keys and routinely rotate them.
Retention schedules, deletion, export, and audits
Document legal holds and purge workflows; test them quarterly.
Test and monitor for AI-specific risks
Continuously evaluate for prompt injection, data leakage, over-broad tool use, and unsafe output. Use the OWASP Top 10 for LLM Apps as a threat model and NIST’s GenAI Profile for controls, evaluations, and incident response playbooks.
Prompt injection, data leakage, model abuse
Harden system prompts, sanitize tool outputs, validate retrieved content, and constrain tools/functions.
Red-team/evaluate; incident response playbooks
Run adversarial tests and log attack traces; instrument rollback and purge of compromised artifacts.
How to do it with CustomGPT.ai
Set conversation retention per agent
Open your agent → Security tab → Conversation Retention Period; choose a retention window to control how long conversation data is stored. Use exports before purging if needed.
Turn on Data Anonymizer for sources
Enable Data Anonymizer when uploading sources so PII is removed before indexing. Use for files and images where identifiers may appear.
Enforce “My Data Only” + Anti-Hallucination
In Intelligence and Security, set Generate Responses From → My Data Only and keep Anti-Hallucination enabled to avoid out-of-scope answers and reduce leakage.
Restrict where the widget runs
In Security, add allowed domains (whitelist) to prevent unauthorized embedding; enable reCAPTCHA to deter automated abuse.
Lock down access
Set up SSO for centralized identity. Create API keys with minimal permissions and expirations; rotate and revoke keys promptly.
Monitor, export, and review risk metrics
Use Customer Intelligence → Risk Metrics to flag misuse/leak risks; export conversation histories and analytics for audits or DSRs. API endpoints allow conversation-level export.
Example — Redacting client PII before using an AI assistant
A client sends a 200-page contract with names, emails, and account numbers. First, you run a masking step that hashes emails and truncates account numbers. You upload the redacted file to CustomGPT.ai with Data Anonymizer on. Your agent is set to My Data Only, Anti-Hallucination on, and Retention: 30 days. The widget is whitelisted to your help site domain and protected by reCAPTCHA. You review Risk Metrics weekly and export conversation logs monthly for audit.
Conclusion
Protecting client data with AI is ultimately a discipline of minimizing exposure while proving strict control over every boundary that handles sensitive inputs.
CustomGPT.ai streamlines that discipline with built-in anonymization, scoped retrieval, whitelisted deployments, tight access controls, and configurable retention that match the same standards you map in your risk program.
Set your agent’s privacy, security, and intelligence settings now to pressure-test how these controls work in real scenarios.