AC-19(4) Access Control for Mobile Devices | Restrictions for Classified Information

(a) Prohibit the use of unclassified mobile devices in facilities containing systems processing, storing, or transmitting classified information unless specifically permitted by the authorizing official; and (b) Enforce the following restrictions on individuals permitted by the authorizing official to use unclassified mobile devices in facilities containing systems processing, storing, or transmitting classified information: (1) Connection of unclassified mobile devices to classified systems is prohibited; (2) Connection of unclassified mobile devices to unclassified systems requires approval from the authorizing official; (3) Use of internal or external modems or wireless interfaces within the unclassified mobile devices is prohibited; and (4) Unclassified mobile devices and the information stored on those devices are subject to random reviews and inspections by organization-defined security officials, and if classified information is found, the incident handling policy is followed. (c) Restrict the connection of classified mobile devices to classified systems in accordance with organization-defined security policies.

Source: NIST SP 800-53 Rev 5, AC-19(4). The statement above is our statement of the clause, read from the published text and cited so you can check it against the official text, not the instrument verbatim. Open NIST SP 800-53 Rev 5 in the compliance library.

Base controls and their enhancements. Which apply follows the baseline you are assessed against (for example FedRAMP Moderate or High, or the low, moderate and high baselines of SP 800-53B). Text in square brackets is a parameter your organisation sets.