Web Bluetooth API must be disabled.

Setting the policy to 3 lets websites ask for access to nearby Bluetooth devices. Setting the policy to 2 denies access to nearby Bluetooth devices.

Leaving the policy unset lets sites ask for access, but users can change this setting.

2 = Do not allow any site to request access to Bluetooth devices via the Web Bluetooth API
3 = Allow sites to ask the user to grant access to a nearby Bluetooth device

Windows group policy:
1. Open the “group policy editor” tool with gpedit.msc
2. Navigate to Policy Path: Computer ConfigurationAdministrative TemplatesGoogleGoogle ChromeContent Settings
Policy Name: Control use of the Web Bluetooth API
Policy State: Enabled
Policy Value: Do not allow any site to request access to Bluetooth devices via the Web Bluetooth API

Universal method:
1. In the omnibox (address bar) type chrome://policy
2. If DefaultWebBluetoothGuardSetting is not displayed under the Policy Name column or it is not set to 2 under the Policy Value column, then this is a finding.

Windows method:
1. Start regedit
2. Navigate to HKLMSoftwarePoliciesGoogleChrome
3. If the DefaultWebBluetoothGuardSetting value name does not exist or its value data is not set to 2, then this is a finding.

Configure the system to provide only organization-defined mission essential capabilities.
NIST SP 800-53::CM-7
NIST SP 800-53 Revision 4::CM-7 a
NIST SP 800-53 Revision 5::CM-7 a
NIST SP 800-53A::CM-7.1 (ii)