Endpoint Device and BYOD Policy Template (ISO/IEC 27001 A.8.1)
Device categories, minimum requirements, lifecycle, patch deadlines, BYOD work-data separation and privacy, lost devices, compliance states, size tiers
How to use: Use it when you define how laptops, phones and personal devices may reach organization data, before an MDM or EDR roll-out. Fill the device categories and the minimum requirements table first. The main pitfall is writing rules the tooling cannot enforce or report on.
Preview
Endpoint Device and BYOD Policy: [Organization name]
Sets the rules for every laptop, desktop, tablet and phone that stores, processes or gives access to [Organization name] information, whether the organization owns it or a person brings their own device (BYOD). Supports ISO/IEC 27001:2022 + Amd 1:2024 Annex A control A.8.1 (user endpoint devices), with links to A.5.10, A.6.7, A.7.9, A.7.14, A.8.7, A.8.8, A.8.19 and A.8.24, and the guidance in ISO/IEC 27002:2022. Replace every
[bracketed]value and every row marked Example.
Document control
| Field | Value |
|---|---|
| Document ID | DOC-ISMS-058 |
| Version | [1.0] |
| Status | [Draft / In review / Approved / Superseded] |
| Owner | [@head-of-it] |
| Approvers/reviewers | [@isms-manager], [@ciso], [@hr-lead], [@dpo or privacy lead] |
| Last updated | YYYY-MM-DD |
| Effective from | YYYY-MM-DD |
| Classification | [Internal] |
| Standard and edition | ISO/IEC 27001:2022 + Amd 1:2024 (A.8.1, cited only); ISO/IEC 27002:2022 |
| Next scheduled review | YYYY-MM-DD (at least annually) |
| Applies to | [All employees, contractors, temporary staff and third parties who access organization information from an endpoint] |
| Supporting standards | [Secure configuration baseline DOC-ISMS-060], [Malware protection standard DOC-ISMS-059], [Acceptable use policy DOC-ISMS-040] |
Approvals
| Role | Name | Decision | Date |
|---|---|---|---|
| Policy owner | [@head-of-it] | [Prepared] | YYYY-MM-DD |
| ISMS manager | [@isms-manager] | [Reviewed] | YYYY-MM-DD |
| Privacy lead | [@dpo] | [Reviewed for BYOD privacy] | YYYY-MM-DD |
| Top management | [@coo] | [Approved] | YYYY-MM-DD |
Revision history
| Version | Date | Author | Change |
|---|---|---|---|
| 1.0 | YYYY-MM-DD | [@owner] | First issue |
| [x.y] | YYYY-MM-DD | [@author] | [Change summary] |
Contents
- 1. Purpose, scope and applicability
- 2. Roles and responsibilities
- 3. Device categories and permitted use
- 4. Minimum security requirements
- 5. Device lifecycle
- 6. Patching and operating system support
- 7. Software installation and application control
- 8. Separation of work data on BYOD
- 9. BYOD privacy commitments
- 10. Lost or stolen devices
- 11. Compliance monitoring and enforcement
- 12. Exceptions
- 13. Size tiers
- 14. Records and evidence
- 15. User acknowledgement
- 16. References
- Standard and licence note
1. Purpose, scope and applicability
This policy protects information stored on, processed by or reachable from user endpoint devices against loss, theft, malware, unauthorised access and leakage. It turns the risk treatment decisions in the risk treatment plan (DOC-ISMS-013) for endpoint risks into rules that people and tooling can follow.
| Item | Value |
|---|---|
| In scope | Laptops, desktops, tablets and phones that access [Organization name] e-mail, collaboration tools, source code, customer data or internal systems, whether organization-owned or personally owned |
| In scope, access method | Native applications, managed browsers and unmanaged browsers reaching organization services |
| Out of scope | [Servers and cloud workloads (secure configuration baseline DOC-ISMS-060), OT operator stations (OT security standard), network devices (network security standard DOC-ISMS-063)] |
| Related controls | A.5.10 acceptable use, A.6.7 remote working, A.7.9 assets off premises, A.7.14 secure disposal, A.8.7 malware, A.8.8 vulnerabilities, A.8.19 software installation, A.8.24 cryptography |
| Risk references | [RISK-006 (Example): customer data on a lost laptop], [RISK-019 (Example): data copied from BYOD phone] |
The policy applies from the effective date to all staff and to third parties whose contract requires them to follow it. Where a contract sets stricter rules for a customer environment, the contract wins.
2. Roles and responsibilities
| Role | Responsibilities |
|---|---|
| Policy owner [@head-of-it] | Maintains this policy, the MDM and EDR configuration, compliance reporting and the device inventory |
| ISMS manager [@isms-manager] | Checks that the policy matches the risk assessment and the SoA entry for A.8.1, tracks exceptions and metrics |
| Security operations [@secops] | Monitors EDR alerts and non-compliant devices, runs remote lock and wipe on request |
| Privacy lead [@dpo] | Approves what device data the organization collects from BYOD and the privacy notice |
| HR [@hr-lead] | Includes device obligations in onboarding and offboarding, handles policy breaches with the disciplinary process (DOC-ISMS-052) |
| Line managers | Approve the device category a person needs, confirm returns at exit |
| Every user | Uses only permitted devices, keeps them updated and locked, reports loss or theft at once |
3. Device categories and permitted use
| Category | Description | May access | May not access |
|---|---|---|---|
| C1 Corporate managed computer | Organization-owned laptop or desktop, fully enrolled in MDM and EDR | All systems the user is authorised for, including restricted data and admin tools | None by category (access control rules still apply) |
| C2 Corporate managed mobile | Organization-owned phone or tablet, fully enrolled | E-mail, chat, collaboration, MFA authenticator, approved business apps | Admin consoles, bulk export of restricted data |
| C3 BYOD mobile with app protection | Personal phone or tablet using managed apps or a work profile, no full device management | E-mail, chat, calendar, documents in managed apps, MFA authenticator | Restricted data downloads outside managed apps, admin consoles |
| C4 BYOD or third-party computer, browser only | Personal or contractor laptop reaching services through a browser session with session controls | Web versions of e-mail and collaboration, with download and print blocked | Source code, production consoles, local sync of files |
| C5 Shared or kiosk device | Meeting-room PCs, reception terminals, training laptops | Named functions only (signage, visitor sign-in) | Personal sign-in to business systems |
Rules:
- A personally owned computer is never used to store organization information locally. Use category C4 or request a C1 device.
- Privileged access (administration of production, identity or
security tooling) is allowed only from category C1 devices, as set in
security/privileged-access-standard. - A person may enrol at most [two] personal mobile devices in C3.
- Contractors use a C1 device issued by [Organization name] or a C4 browser session unless their contract allows a contractor-managed device that meets section 4 and the supplier agreement (DOC-ISMS-068).
4. Minimum security requirements
| Requirement | C1 Corporate computer | C2 Corporate mobile | C3 BYOD mobile | C4 Browser only |
|---|---|---|---|---|
| Enrolment | Full MDM, enrolled at purchase through automated enrolment | Full MDM | App protection policy or work profile | None, session controls at the identity provider |
| Encryption at rest | Full-disk encryption on, recovery key escrowed in MDM | Device encryption on (platform default) | Device encryption on, checked at enrolment | Not checked, no local storage permitted |
| Screen lock | Auto-lock after [5] minutes, password or biometric | Auto-lock after [2] minutes, PIN of at least [6] digits | Device PIN of at least [6] digits, app PIN for managed apps | Session timeout [30] minutes idle |
| Supported OS | Vendor-supported version only | Vendor-supported version only | Vendor-supported version, minimum [OS version] set in policy | Supported browser version |
| Patching | Section 6 deadlines | Section 6 deadlines | Minimum OS level enforced at sign-in | Browser up to date at sign-in |
| Malware protection | EDR per DOC-ISMS-059 | Mobile threat defence [Yes / No] | Jailbreak and root detection in managed apps | Not applicable |
| Host firewall | On, managed centrally | Platform default | Platform default | Not applicable |
| Local admin rights | Removed by default, time-bound elevation on request | Not applicable | Not applicable | Not applicable |
| Configuration baseline | DOC-ISMS-060 platform baseline | DOC-ISMS-060 mobile baseline | Not applicable | Not applicable |
| Backup of work data | Work files in organization cloud storage, no reliance on local copies | Same | Same | Same |
Example rule entries for the rule log:
| Rule ID | Category | Rule | Enforced by | Evidence |
|---|---|---|---|---|
| END-RULE-001 (Example) | C1 | Full-disk encryption on, key escrowed | MDM compliance policy | Monthly MDM encryption report |
| END-RULE-002 (Example) | C1, C2 | OS version not older than vendor support | MDM compliance policy plus identity conditional access | Non-compliant device list |
| END-RULE-003 (Example) | C3 | Managed apps block copy and paste to unmanaged apps | App protection policy | Policy export, quarterly |
| END-RULE-004 (Example) | C4 | Download, print and clipboard blocked in browser sessions | Session control at identity provider | Session policy export |
5. Device lifecycle
- Request and approval. The line manager approves the category.
- Procure. Buy only from approved channels that support automated enrolment, so the device is managed from first boot.
- Enrol. The device receives the MDM profile, EDR agent and the platform baseline before the user signs in to business systems.
- Issue. Record the device in the asset inventory (DOC-ISMS-012) with serial number, user and category. The user acknowledges this policy (section 15).
- Operate. Patching, monitoring and compliance checks run continuously (sections 6 and 11).
- Repair. Before third-party repair, remove the storage or wipe the device, or use a repair service bound by confidentiality terms.
- Reissue. Wipe and re-enrol before a new user receives it.
- Retire. Sanitise to the method in the equipment disposal and reuse record (DOC-ISMS-057) and keep the certificate.
6. Patching and operating system support
| Update type | Deadline from release (Example) | Enforcement |
|---|---|---|
| Actively exploited vulnerability (for example listed in the CISA Known Exploited Vulnerabilities catalogue) | [3] days | Forced install and restart after a [24]-hour deferral |
| Critical or high security update | [14] days | Forced after deferral period |
| Other security updates | [30] days | Automatic |
| Feature or major OS version | [90] days after the organization approves it | Staged rings: IT pilot, early adopters, all |
| Browser and productivity apps | Automatic, [7] days | Auto-update enforced |
Devices on an operating system the vendor no longer supports lose access
to organization services on the date support ends, unless an approved
exception exists (section 12). Deadlines and severities follow
security/vulnerability-management-policy; open items are tracked in
the vulnerability remediation tracker (DOC-ISMS-072).
7. Software installation and application control
- Users install software on C1 devices from the self-service catalogue. Requests for other software go to IT, which checks licensing, vendor support and security before adding it to the catalogue.
- Local administrator rights are removed. Time-bound elevation is granted through [elevation tool] with the reason logged.
- Application control blocks known-bad and unapproved executables and scripts according to DOC-ISMS-059.
- Browser extensions are limited to an allow-list managed centrally.
- Generative AI tools and plug-ins follow
ai-data/ai-usage-policy. - On C3 devices only the managed apps listed in [app list] may open organization data.
8. Separation of work data on BYOD
| Measure | Requirement |
|---|---|
| Container method | [Work profile on Android, managed apps with app protection on iOS and iPadOS, or managed browser] |
| Data flow | Copy, paste, save-as and share from managed to unmanaged apps blocked |
| Backup | Work data excluded from personal device backups where the platform allows |
| Authentication | App PIN or biometric after [30] minutes inactive, plus MFA at sign-in |
| Offline access | Managed apps wipe cached work data after [30] days without sign-in |
| Selective wipe | Removes managed apps and work data only, never personal content |
| Minimum device state | Not jailbroken or rooted, supported OS version, device lock set |
If a person declines the container method, they use category C4 (browser only) or request a corporate device.
9. BYOD privacy commitments
[Organization name] commits to the following for personally owned devices enrolled in category C3:
| The organization can see | The organization cannot see |
|---|---|
| Device model, OS version, device name | Personal e-mail, messages, photos, contacts |
| Whether the device lock and encryption are on | Browsing history outside managed apps |
| Whether the device is jailbroken or rooted | Location (not collected) |
| List of managed apps and their versions | Personal apps and their content |
| Sign-in times to organization services | Phone call or messaging records |
- Data collected is used only to protect organization information and to decide whether the device may connect.
- Device data is retained for [90] days after unenrolment, then deleted.
- The organization never performs a full wipe of a personally owned device. Only selective wipe is used.
- If an investigation needs a personal device, the person is asked for consent and may decline. Legal holds follow the incident response plan (DOC-ISMS-020) and applicable law.
- A staff privacy notice describes this processing and is listed in the
records of processing where those are kept (
compliance/gdpr-ropa). - Costs: [the organization pays a monthly allowance of USD [x] / no allowance]. Use your local currency.
10. Lost or stolen devices
- Report loss or theft to [service desk channel, phone number] at once, and no later than [1] hour after noticing. Reports are accepted at any time.
- The service desk logs the event in the incident register (DOC-ISMS-021) following the security event reporting procedure (DOC-ISMS-023).
- Security operations lock the device and revoke sessions and refresh tokens within [1] hour of the report.
- Corporate devices are fully wiped. BYOD devices receive a selective wipe.
- If the MDM record shows the device was encrypted and locked, record
the evidence and close the event. If not, or if it is unknown, raise
an incident under DOC-ISMS-020 and assess it with
compliance/personal-data-breach-assessment. - Theft is reported to the police where required by insurance or law. Keep the crime reference with the record.
11. Compliance monitoring and enforcement
| State | Trigger | Effect |
|---|---|---|
| Compliant | All section 4 checks pass | Full access for its category |
| Grace | A check fails (for example a pending patch) | Access continues, user notified daily, grace period [72] hours |
| Blocked | Grace period ends, or a critical check fails (encryption off, jailbreak, EDR missing) | Conditional access blocks organization services until fixed |
| Retired | Device returned, lost or replaced | Removed from MDM and inventory after wipe |
Security operations review the non-compliant device list [weekly]. The ISMS manager reports the metrics below to the steering committee (DOC-ISMS-007) each quarter.
| Metric | Formula | Target (Example) |
|---|---|---|
| Fleet compliance | Compliant devices / all enrolled devices | At least 97% |
| Encryption coverage | C1 devices with encryption on / all C1 devices | 100% |
| Patch latency | Median days from release to install, critical updates | Under 7 days |
| Unmanaged access | Sign-ins from unmanaged devices outside C4 rules | 0 |
| Time to lock | Median minutes from loss report to lock | Under 60 |
Breaches of this policy are handled under the disciplinary process for security breaches (DOC-ISMS-052), proportionate to intent and impact.
12. Exceptions
Exceptions are requested with the security exception request
(DOC-ISMS-122, security/security-exception-request), assessed against
the risk criteria (DOC-ISMS-010) and approved at the authority the risk
methodology (DOC-ISMS-010 section 2.4) sets for the residual risk: the
risk owner for Low; the risk owner and department head for Medium (top
management if the risk category is Averse, DOC-ISMS-015 section 9 rule
1); top management with a treatment decision for High, recorded in the
risk acceptance record (DOC-ISMS-019). Critical residual risk is not
approvable as an exception: treat it or stop the activity. The ISMS
manager reviews every request and keeps the exception register. Maximum
duration is 12 months for Low or Medium and 6 months for High; at expiry
the exception is reassessed, and a renewal is a new decision
(DOC-ISMS-122 section 7).
| Exception ID | Device and rule | Compensating control | Expiry |
|---|---|---|---|
| EXC-END-001 (Example) | Lab laptop on older OS for a medical device interface (END-RULE-002) | No e-mail or internet, isolated VLAN, monthly check | 2027-06-30 |
13. Size tiers
| Aspect | Small: Quillmere Analytics Ltd (46 staff) | Medium: Quillmere Health Systems (320 staff) | Large: Quillmere Group (2,400 staff, 6 sites) |
|---|---|---|---|
| Device model (Example) | 38 C1 laptops for employees, 8 contractors on C4 browser sessions, C3 phones optional | C1 laptops for all staff, C2 phones for on-call and clinical support teams, C3 for others | C1 for office staff, C5 shared terminals on plant floors, OT stations governed separately |
| Tooling | MDM and app protection from the productivity suite, one EDR product | Dedicated MDM, EDR with managed detection service | Regional MDM tenants or groups per country, EDR integrated with SIEM |
| Ownership | Head of Engineering Operations (0.5 FTE ISMS manager) with one IT generalist | IT operations team, security team of 3 for monitoring | Group IT with site IT leads, CISO security office for policy and monitoring |
| BYOD privacy | Single notice | Notice reviewed by privacy lead (processor and controller roles) | Notice per country to meet local employment and privacy law, works council consultation where required |
| Reporting | Monthly compliance export reviewed by ISMS manager | Weekly dashboard, quarterly steering report | Per-site metrics rolled into group report |
14. Records and evidence
| Record | Owner | Location | Retention (Example) |
|---|---|---|---|
| Device inventory with category and owner | [@head-of-it] | MDM and asset inventory DOC-ISMS-012 | Life of device plus 1 year |
| MDM compliance and encryption reports | [@head-of-it] | MDM console exports, ISMS evidence folder | 3 years (one certification cycle) |
| EDR coverage report | [@secops] | EDR console exports | 3 years |
| Policy acknowledgements | [@hr-lead] | HR system | Employment plus [6] years |
| Lost and stolen device records | [@secops] | Incident register DOC-ISMS-021 | 3 years minimum |
| Disposal and sanitisation certificates | [@head-of-it] | Equipment disposal and reuse record DOC-ISMS-057 | 6 years |
| Exceptions | [@isms-manager] | Exception register | Expiry plus 3 years |
Link each record to control A.8.1 in the control evidence matrix
(DOC-ISMS-033, isms/control-evidence-matrix).
15. User acknowledgement
By signing, I confirm that I have read this policy, that I will use only devices permitted for my category, keep them updated, locked and encrypted, report loss or theft at once, and, for a personally owned device, that I understand the privacy commitments in section 9 and the selective wipe in section 8.
| Name | Device category | Device ID | Signature | Date |
|---|---|---|---|---|
| [Name] | [C1 / C2 / C3 / C4] | [Asset tag or enrolment ID] | [Signature] | YYYY-MM-DD |
16. References
| Reference | Edition | Use |
|---|---|---|
| ISO/IEC 27001:2022 + Amd 1:2024, https://www.iso.org/standard/82875.html | Current, Amd 1 https://www.iso.org/standard/88435.html | Annex A control A.8.1 and related controls |
| ISO/IEC 27002:2022, https://www.iso.org/standard/75652.html | Current | Control guidance and attributes |
| NIST SP 800-124 Rev. 2, Guidelines for Managing the Security of Mobile Devices in the Enterprise | May 2023 | Mobile device management concepts (free public source) |
| CISA Known Exploited Vulnerabilities catalogue | Live catalogue | Prioritising patches |
| GDPR (Regulation (EU) 2016/679) | As amended | Example of a privacy law that applies to BYOD device data |
Related templates: compliance/acceptable-use-policy (DOC-ISMS-040),
isms/remote-working-policy (DOC-ISMS-054),
isms/malware-protection-standard (DOC-ISMS-059),
isms/secure-configuration-baseline (DOC-ISMS-060),
isms/saas-productivity-security-baseline (DOC-ISMS-075),
security/vulnerability-management-policy, security/cryptography-standard,
security/privileged-access-standard,
isms/equipment-disposal-reuse-record (DOC-ISMS-057),
isms/offboarding-security-checklist (DOC-ISMS-053),
compliance/statement-of-applicability (DOC-ISMS-011).
Standard and licence note
Structure aligned with ISO/IEC 27001:2022 + Amd 1:2024 (Annex A control A.8.1 and related controls) and ISO/IEC 27002:2022. Control numbers are cited with short original labels. The policy text, tables, categories and examples are original and reproduce no text from ISO/IEC standards: obtain the official standards from ISO (https://www.iso.org/standard/82875.html, https://www.iso.org/standard/75652.html) or your national standards body. NIST SP 800-124 Rev. 2 is a US government publication. Check for the current edition of each reference before use.
Template licence: MIT.
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