NIST · Shared reference library

NIST SP 800-53 Rev. 5 Common Control Library

Browse 1,193 controls and enhancements across 20 security and privacy families. Use the GovRAMP crosswalk to locate controls referenced by Security Snapshot, Core, and Moderate.

A shared catalog supports common-control planning; designation as a common, hybrid, or system-specific control depends on your organization’s implementation and inheritance decisions.

Sources and crosswalk scope

NIST OSCAL content 5.1.1+u4, retrieved 2026-09-18. GovRAMP Snapshot v1.4 and Core selection from Moderate v1.06 reference the December 2020 Rev. 5 text. Mappings establish exact identifier correspondence, not identical requirements, inherited implementation, or GovRAMP authorization. GovRAMP parameters and additional requirements remain authoritative for each program. Full Moderate, High, and other programs are not mapped here. Withdrawn controls are retained for reference.

Official pinned NIST source

SHA-256: 81cf2de45ede9aef3de7ce09d65ea9d32f662c483bbf916f6e346292b22f7763

Reset

9 matching controls · Page 1 of 1

System and Information Integrity · Base control

SI-19 · De-identification

Control statement and discussion

NIST control statement

a. Remove the following elements of personally identifiable information from datasets: [Assignment: elements] ; and b. Evaluate [Assignment: frequency] for effectiveness of de-identification.

Discussion

De-identification is the general term for the process of removing the association between a set of identifying data and the data subject. Many datasets contain information about individuals that can be used to distinguish or trace an individual’s identity, such as name, social security number, date and place of birth, mother’s maiden name, or biometric records. Datasets may also contain other information that is linked or linkable to an individual, such as medical, educational, financial, and employment information. Personally identifiable information is removed from datasets by trained individuals when such information is not (or no longer) necessary to satisfy the requirements envisioned for the data. For example, if the dataset is only used to produce aggregate statistics, the identifiers that are not needed for producing those statistics are removed. Removing identifiers improves privacy protection since information that is removed cannot be inadvertently disclosed or improperly used. Organizations may be subject to specific de-identification definitions or methods under applicable laws, regulations, or policies. Re-identification is a residual risk with de-identified data. Re-identification attacks can vary, including combining new datasets or other improvements in data analytics. Maintaining awareness of potential attacks and evaluating for the effectiveness of the de-identification over time support the management of this residual risk.

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.

System and Information Integrity · Enhancement

SI-19(1) · Collection

View parent control
Control statement and discussion

NIST control statement

De-identify the dataset upon collection by not collecting personally identifiable information.

Discussion

If a data source contains personally identifiable information but the information will not be used, the dataset can be de-identified when it is created by not collecting the data elements that contain the personally identifiable information. For example, if an organization does not intend to use the social security number of an applicant, then application forms do not ask for a social security number.

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.

System and Information Integrity · Enhancement

SI-19(2) · Archiving

View parent control
Control statement and discussion

NIST control statement

Prohibit archiving of personally identifiable information elements if those elements in a dataset will not be needed after the dataset is archived.

Discussion

Datasets can be archived for many reasons. The envisioned purposes for the archived dataset are specified, and if personally identifiable information elements are not required, the elements are not archived. For example, social security numbers may have been collected for record linkage, but the archived dataset may include the required elements from the linked records. In this case, it is not necessary to archive the social security numbers.

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.

System and Information Integrity · Enhancement

SI-19(3) · Release

View parent control
Control statement and discussion

NIST control statement

Remove personally identifiable information elements from a dataset prior to its release if those elements in the dataset do not need to be part of the data release.

Discussion

Prior to releasing a dataset, a data custodian considers the intended uses of the dataset and determines if it is necessary to release personally identifiable information. If the personally identifiable information is not necessary, the information can be removed using de-identification techniques.

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.

System and Information Integrity · Enhancement

SI-19(4) · Removal, Masking, Encryption, Hashing, or Replacement of Direct Identifiers

View parent control
Control statement and discussion

NIST control statement

Remove, mask, encrypt, hash, or replace direct identifiers in a dataset.

Discussion

There are many possible processes for removing direct identifiers from a dataset. Columns in a dataset that contain a direct identifier can be removed. In masking, the direct identifier is transformed into a repeating character, such as XXXXXX or 999999. Identifiers can be encrypted or hashed so that the linked records remain linked. In the case of encryption or hashing, algorithms are employed that require the use of a key, including the Advanced Encryption Standard or a Hash-based Message Authentication Code. Implementations may use the same key for all identifiers or use a different key for each identifier. Using a different key for each identifier provides a higher degree of security and privacy. Identifiers can alternatively be replaced with a keyword, including transforming "George Washington" to "PATIENT" or replacing it with a surrogate value, such as transforming "George Washington" to "Abraham Polk."

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.

System and Information Integrity · Enhancement

SI-19(5) · Statistical Disclosure Control

View parent control
Control statement and discussion

NIST control statement

Manipulate numerical data, contingency tables, and statistical findings so that no individual or organization is identifiable in the results of the analysis.

Discussion

Many types of statistical analyses can result in the disclosure of information about individuals even if only summary information is provided. For example, if a school that publishes a monthly table with the number of minority students enrolled, reports that it has 10-19 such students in January, and subsequently reports that it has 20-29 such students in March, then it can be inferred that the student who enrolled in February was a minority.

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.

System and Information Integrity · Enhancement

SI-19(6) · Differential Privacy

View parent control
Control statement and discussion

NIST control statement

Prevent disclosure of personally identifiable information by adding non-deterministic noise to the results of mathematical operations before the results are reported.

Discussion

The mathematical definition for differential privacy holds that the result of a dataset analysis should be approximately the same before and after the addition or removal of a single data record (which is assumed to be the data from a single individual). In its most basic form, differential privacy applies only to online query systems. However, it can also be used to produce machine-learning statistical classifiers and synthetic data. Differential privacy comes at the cost of decreased accuracy of results, forcing organizations to quantify the trade-off between privacy protection and the overall accuracy, usefulness, and utility of the de-identified dataset. Non-deterministic noise can include adding small, random values to the results of mathematical operations in dataset analysis.

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.

System and Information Integrity · Enhancement

SI-19(7) · Validated Algorithms and Software

View parent control
Control statement and discussion

NIST control statement

Perform de-identification using validated algorithms and software that is validated to implement the algorithms.

Discussion

Algorithms that appear to remove personally identifiable information from a dataset may in fact leave information that is personally identifiable or data that is re-identifiable. Software that is claimed to implement a validated algorithm may contain bugs or implement a different algorithm. Software may de-identify one type of data, such as integers, but not de-identify another type of data, such as floating point numbers. For these reasons, de-identification is performed using algorithms and software that are validated.

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.

System and Information Integrity · Enhancement

SI-19(8) · Motivated Intruder

View parent control
Control statement and discussion

NIST control statement

Perform a motivated intruder test on the de-identified dataset to determine if the identified data remains or if the de-identified data can be re-identified.

Discussion

A motivated intruder test is a test in which an individual or group takes a data release and specified resources and attempts to re-identify one or more individuals in the de-identified dataset. Such tests specify the amount of inside knowledge, computational resources, financial resources, data, and skills that intruders possess to conduct the tests. A motivated intruder test can determine if the de-identification is insufficient. It can also be a useful diagnostic tool to assess if de-identification is likely to be sufficient. However, the test alone cannot prove that de-identification is sufficient.

GovRAMP crosswalk

Not selected in the imported Snapshot or Core sets. This does not establish exclusion from other GovRAMP baselines.