AU-13 AU · Audit and Accountability

Monitoring for Information Disclosure

LOW MODERATE HIGH
3 Enhancements 0 Overlays 6 Related Controls
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Requirements NIST SOURCE

    1. 1.Notify [personnel or roles] ; and
    2. 2.Take the following additional actions: [additional actions].
Discussion (NIST Supplemental Guidance)

Unauthorized disclosure of information is a form of data leakage. Open-source information includes social networking sites and code-sharing platforms and repositories. Examples of organizational information include personally identifiable information retained by the organization or proprietary information generated by the organization.

Enhancements NIST SOURCE

AU-13(1) Use of Automated Tools LOW MODERATE HIGH

Monitor open-source information and information sites using [automated mechanisms].

Discussion

Automated mechanisms include commercial services that provide notifications and alerts to organizations and automated scripts to monitor new posts on websites.

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AU-13(2) Review of Monitored Sites LOW MODERATE HIGH

Review the list of open-source information sites being monitored [frequency].

Discussion

Reviewing the current list of open-source information sites being monitored on a regular basis helps to ensure that the selected sites remain relevant. The review also provides the opportunity to add new open-source information sites with the potential to provide evidence of unauthorized disclosure of organizational information. The list of sites monitored can be guided and informed by threat intelligence of other credible sources of information.

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AU-13(3) Unauthorized Replication of Information LOW MODERATE HIGH

Employ discovery techniques, processes, and tools to determine if external entities are replicating organizational information in an unauthorized manner.

Discussion

The unauthorized use or replication of organizational information by external entities can cause adverse impacts on organizational operations and assets, including damage to reputation. Such activity can include the replication of an organizational website by an adversary or hostile threat actor who attempts to impersonate the web-hosting organization. Discovery tools, techniques, and processes used to determine if external entities are replicating organizational information in an unauthorized manner include scanning external websites, monitoring social media, and training staff to recognize the unauthorized use of organizational information.

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Implementation Guidance

Engineering Interpretation

Original engineering commentary written for this explorer — not NIST source text and not authoritative guidance.

No engineering interpretation has been authored for AU-13 yet. This section is architected to receive it — see the Requirements and Assessment sections above for the authoritative NIST source content in the meantime.

Assessment

NIST SP 800-53A REV 5.2.0

Assessment Objectives

  1. open-source information and/or information sites to be monitored for evidence of unauthorized disclosure of organizational information is/are defined;
  2. the frequency with which open-source information and/or information sites are monitored for evidence of unauthorized disclosure of organizational information is defined;
  3. personnel or roles to be notified if an information disclosure is discovered is/are defined;
  4. additional actions to be taken if an information disclosure is discovered are defined;
  5. <AU-13_ODP[01] open-source information and/or information sites> is/are monitored <AU-13_ODP[02] frequency> for evidence of unauthorized disclosure of organizational information;
  6. <AU-13_ODP[03] personnel or roles> are notified if an information disclosure is discovered;
  7. <AU-13_ODP[04] additional actions> are taken if an information disclosure is discovered.

Examine

[SELECT FROM: Audit and accountability policy; system security plan; privacy plan; procedures addressing information disclosure monitoring; system design documentation; system configuration settings and associated documentation; monitoring records; system audit records; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with responsibilities for monitoring open-source information and/or information sites; organizational personnel with security and privacy responsibilities].

Test

[SELECT FROM: Mechanisms implementing monitoring for information disclosure].

STIGs & CCIs

No STIG checks or CCI mappings are currently loaded for AU-13. This section is architected to display, per product: STIG ID, Finding ID, Severity, Title, Description, Check, Fix, CCI, and NIST control mapping — but nothing is populated here until a real DISA STIG/CCI dataset is ingested.

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Evidence

Potential Evidence — Derived

Categorized from the SP 800-53A "Examine"/"Test" artifact list above by keyword — not an authoritative NIST evidence list.

Policy

  • Audit and accountability policy
  • system security plan
  • privacy plan

Configuration

  • system design documentation
  • system configuration settings and associated documentation

Testing

  • Mechanisms implementing monitoring for information disclosure

Other Records

  • procedures addressing information disclosure monitoring
  • monitoring records
  • system audit records
  • other relevant documents or records