A PrivateBin deployment can support secure information sharing, but an auditor will usually assess the surrounding controls rather than the tool alone. This checklist explains what evidence to collect for SOC 2 readiness and ISO 27001 compliance, how to organize it, and when to review it so that configuration decisions remain traceable and testable.
Overview
Audit evidence should show more than a screenshot of a working PrivateBin instance. A useful evidence set connects the deployment to an accountable owner, documented risks, approved configuration, operating procedures, and recurring review activities. It should also make clear which controls are provided by the platform, which are implemented in the hosting environment, and which depend on administrators and users.
For SOC 2, evidence may support security-related criteria such as access restriction, change management, risk mitigation, monitoring, and incident response. For ISO 27001, the same evidence may contribute to the organization’s information security management system and applicable control themes. The exact relevance depends on your scope, risk assessment, statement of applicability, system boundaries, and auditor’s testing approach. Do not present a PrivateBin deployment as automatically compliant with either framework.
Start by defining the in-scope service: hosted or self-hosted PrivateBin, production and test environments, reverse proxy, storage, logging, authentication components, administrators, and connected infrastructure. Record the deployment version or release reference, environment owner, data classification, intended users, and approved use cases. This basic inventory gives every later piece of evidence a clear context.
For related access-control decisions, see How to Add Authentication and Access Control to PrivateBin. If your review includes a hosted service or supplier, the PrivateBin Security Questionnaire Guide can help organize questions and supporting responses.
What to track
1. Ownership, scope, and risk
- Service owner, technical owner, and security contact.
- System diagram showing PrivateBin, proxy, storage, identity components, and administrative paths.
- Asset inventory entry and environment classification.
- Risk assessment covering sensitive pastes, link exposure, unauthorized access, abuse, availability, retention, and operational dependencies.
- Approved use policy describing information that may or may not be shared.
Keep the approval record with the risk assessment. Auditors often need to see not only that a risk was identified, but also who accepted or treated it and when the decision was reviewed.
2. Access restrictions and administrative review
Collect evidence that access follows the deployment’s intended trust model. Depending on the design, this can include authentication settings, network restrictions, administrator role definitions, identity-provider configuration, and a current list of privileged users. Preserve dated exports or screenshots where practical, but pair them with a short explanation of what each setting proves.
Track administrator joiner, mover, and leaver activity; periodic privileged-access reviews; failed or unusual access events where available; and approvals for elevated access. If the instance is intentionally public, document that decision and the compensating safeguards, such as strict paste expiration, limited use cases, or additional controls at the proxy layer.
3. Secure configuration and data handling
Maintain a configuration baseline covering transport security, secure headers or proxy behavior, paste expiration options, upload limits, rate limits, authentication boundaries, administrative endpoints, and storage permissions. Record the baseline’s owner and approval date. A configuration screenshot without a version, environment, or collection date is weak evidence because it may not represent the state tested by the auditor.
Also retain your data retention policy, deletion procedure, and decision about backups. PrivateBin content may be designed to expire or be deleted, but the surrounding storage, logs, snapshots, or backups may have different lifecycles. Document those differences instead of assuming that an application-level expiration setting removes every copy.
For file-enabled deployments, use the PrivateBin File Upload Security Checklist to document limits, scanning decisions, and safe handling expectations.
4. Vulnerability and dependency management
Keep release and dependency records, vulnerability review results, patch tickets, and exceptions. Evidence can include the date a release was assessed, the affected environment, severity evaluation, remediation owner, target date, and validation after deployment. If a finding is accepted temporarily, preserve the rationale and compensating measures.
A practical audit trail links each production change to a request, approval, implementation record, and post-change check. This is more useful than a general statement that the system is regularly updated.
5. Change management and operational monitoring
Collect approved change records for configuration, code, infrastructure, authentication, storage, and retention behavior. Include test results or a reason testing was not required. Track monitoring coverage, alert ownership, service health checks, and log retention. If some activity cannot be logged because of the deployment design, document the limitation and the alternative review process.
6. Incidents, backups, and continuity
Maintain an incident response procedure for leaked paste links, unauthorized access, malicious uploads, service abuse, and suspected data exposure. Evidence may include tabletop exercises, incident tickets, escalation contacts, lessons learned, and corrective-action tracking. The PrivateBin Incident Response Runbook provides a useful starting point for link-leak scenarios.
Record whether PrivateBin data is backed up, why that decision was made, who approved it, and how recovery requirements are addressed. A no-backup design can be intentional, but it still needs an explicit availability and recovery rationale. If backups exist, track encryption, access, retention, restore testing, and deletion behavior.
Evidence mapping table
| Evidence area | Potential SOC 2 relevance | Potential ISO 27001 relevance |
|---|---|---|
| Asset owner, scope, and risk register | Risk management and control ownership | ISMS scope, risk assessment, and treatment |
| Access reviews and administrator approvals | Logical access and restricted privileges | Access control and identity management themes |
| Configuration baseline and retention decisions | System operations and security safeguards | Configuration, data protection, and operational control themes |
| Patch records and vulnerability reviews | Risk mitigation and change management | Technical vulnerability and change management themes |
| Incident exercises and corrective actions | Incident response and monitoring | Incident management and continual improvement |
This is an evidence-planning aid, not a formal control crosswalk. Confirm the mapping against the applicable framework version and your audit scope.
Cadence and checkpoints
Use a recurring schedule instead of assembling evidence only when an audit begins. A monthly checkpoint can cover open vulnerabilities, failed health checks, administrative changes, incidents, and overdue remediation. A quarterly review can cover privileged access, configuration drift, retention settings, risk acceptance, backup or recovery decisions, and the evidence index.
Review the full deployment baseline after a major release, infrastructure migration, authentication change, storage change, new upload capability, or significant change in data classification. The evidence owner should record the review date, reviewer, environment examined, findings, and resulting tickets.
Store evidence in a controlled repository with consistent naming. For example: privatebin-production-access-review-2026-Q2 or privatebin-config-baseline-2026-06-15. Restrict access to audit evidence because screenshots, logs, and tickets may contain operational details or sensitive data.
How to interpret changes
Not every change is a control failure. The important question is whether the change was expected, authorized, assessed, and reflected in the evidence. Compare the current configuration with the approved baseline and classify differences as approved change, drift, emergency change, or unexplained variance.
Look for patterns rather than isolated records. Repeated overdue patches may indicate an unrealistic remediation process. Recurring access-review exceptions may show that ownership is unclear. A growing gap between application expiration and storage retention may require a data-lifecycle review. Increased upload volume may change capacity, scanning, abuse-prevention, and incident-response assumptions; consult the PrivateBin Capacity and Performance Planning Guide when workload assumptions change.
Separate facts from conclusions in every evidence note. State what was observed, when it was observed, what control or risk it relates to, and what action follows. Avoid claims such as “SOC 2 compliant” or “ISO 27001 certified” based solely on a configuration review. Those conclusions depend on the organization’s complete control environment and, where applicable, an independent assessment.
When to revisit
Revisit this checklist at least quarterly and before a SOC 2 evidence request, ISO 27001 internal audit, customer security questionnaire, or material system change. Update it sooner when PrivateBin or its dependencies are upgraded, the deployment moves between hosted and self-hosted environments, authentication changes, file uploads are enabled, retention requirements change, or an incident reveals an untested assumption.
For the next review, take these five actions:
- Confirm the in-scope architecture, owners, users, and data types.
- Export or capture the current access, configuration, retention, and storage settings.
- Reconcile vulnerabilities, changes, incidents, backups, and open risk treatments.
- Ask an independent reviewer to test whether each evidence item proves the stated control activity.
- Archive the approved evidence set, record exceptions, and assign dated follow-up actions.
This workflow keeps PrivateBin audit evidence current without treating the tool as a substitute for governance. The result is a clearer record of what is controlled, what is inherited from the surrounding cloud environment, and what still needs attention.
