The ultimate audit guide to ISO 27001 Annex A 7.9 Security of assets off-premises
Table of contents
- 1. Off-Premises Asset Usage Policy Verified
- 2. Asset Authorisation and Removal Logs Confirmed
- 3. Full Disk Encryption (FDE) Enforcement Validated
- 4. Physical Protection in Transit Verified
- 5. Remote Wipe and Tracking Capabilities Confirmed
- 6. Secure Connection (VPN) Mandate Validated
- 7. Off-Premises Asset Maintenance and Patching Verified
- 8. Inventory Reconciliation for Off-Premises Assets Confirmed
- 9. Removal of Sensitive Information from Public Display Verified
- 10. Secure Disposal of Off-Premises Asset Data Confirmed
1. Off-Premises Asset Usage Policy Verified
Verification Criteria: A documented policy exists that explicitly defines the authorisation requirements and security standards for assets taken off-premises.
Required Evidence: Approved “Off-Premises Asset Policy” or “Mobile Working Policy” with evidence of senior management sign-off.
Pass/Fail Test: If the organisation cannot produce a formal policy governing the removal and usage of assets outside the office, mark as Non-Compliant.
2. Asset Authorisation and Removal Logs Confirmed
Verification Criteria: Every instance of an asset leaving the premises is authorised by management and recorded in a log or tracking system.
Required Evidence: Asset movement logs or digital “Removal of Assets” request approvals in the ITSM or HR system.
Pass/Fail Test: If a physical inspection reveals assets missing from the office that have no corresponding authorisation record or removal log, mark as Non-Compliant.
3. Full Disk Encryption (FDE) Enforcement Validated
Verification Criteria: All portable assets (laptops, tablets, external drives) are protected by technical full-disk encryption to prevent data exposure upon loss or theft.
Required Evidence: MDM (Mobile Device Management) or Endpoint Protection reports showing “Encrypted” status for all off-premises endpoints.
Pass/Fail Test: If a sampled laptop assigned for remote use is found to have BitLocker, FileVault, or equivalent encryption disabled, mark as Non-Compliant.
4. Physical Protection in Transit Verified
Verification Criteria: Personnel are formally required to maintain physical custody of assets during transit and avoid leaving them unattended in public places or vehicles.
Required Evidence: Signed “Asset Acceptance Form” containing specific transit security mandates or training logs covering physical asset protection.
Pass/Fail Test: If the organisation lacks a signed commitment from personnel regarding the physical safeguarding of assets in public spaces, mark as Non-Compliant.
5. Remote Wipe and Tracking Capabilities Confirmed
Verification Criteria: Technical controls are in place to remotely lock or wipe off-premises assets in the event they are reported as lost or stolen.
Required Evidence: MDM dashboard screenshots showing “Remote Wipe” functionality and logs of any historical wipe commands executed.
Pass/Fail Test: If the organisation cannot technically execute a remote wipe on a lost mobile asset within its current infrastructure, mark as Non-Compliant.
6. Secure Connection (VPN) Mandate Validated
Verification Criteria: Technical configurations ensure that off-premises assets must use a secure encrypted tunnel (VPN/SD-WAN) to access internal organisational resources.
Required Evidence: VPN configuration profiles on a sampled device or firewall logs showing remote connections limited to authorised secure tunnels.
Pass/Fail Test: If a remote asset can access internal file shares or sensitive applications over a public internet connection without a VPN, mark as Non-Compliant.
7. Off-Premises Asset Maintenance and Patching Verified
Verification Criteria: Assets used off-premises receive regular security patches and antivirus updates despite not being connected to the local office network.
Required Evidence: Patch management reports (e.g. Intune or Jamf) showing “Up-to-Date” status for assets that have not connected to the office in >30 days.
Pass/Fail Test: If off-premises assets show a significant lag in critical security patches compared to on-premises assets, mark as Non-Compliant.
8. Inventory Reconciliation for Off-Premises Assets Confirmed
Verification Criteria: The organisation performs periodic physical or digital audits to confirm the location and status of all assets assigned for off-premises use.
Required Evidence: Annual asset reconciliation report or timestamped MDM “Last Seen” reports for the entire inventory.
Pass/Fail Test: If the organisation cannot verify the “Last Seen” status of a sampled off-premises asset within the previous 90 days, mark as Non-Compliant.
9. Removal of Sensitive Information from Public Display Verified
Verification Criteria: Procedures or technical tools (e.g. privacy filters) are used to prevent unauthorised viewing of sensitive data in public spaces.
Required Evidence: Physical sighting of privacy filters on sampled remote laptops or documented guidance on “shoulder surfing” in the remote work policy.
Pass/Fail Test: If staff are found working on high-sensitivity data in public areas without privacy filters or documented caution, mark as Non-Compliant.
10. Secure Disposal of Off-Premises Asset Data Confirmed
Verification Criteria: When an off-premises asset is returned or decommissioned, a formalised process ensures the secure erasure of all stored data.
Required Evidence: Certificates of data destruction or technician logs verifying the factory reset/wipe of returned hardware.
Pass/Fail Test: If a returned laptop is re-imaged or re-issued without a verified data sanitisation step being recorded, mark as Non-Compliant.