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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

ISMS & ISO/IEC 27001FullISO/IEC 27001:2022 A.8.1 (cited only); ISO/IEC 27002:2022endpointdevicebyodpolicy

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

FieldValue
Document IDDOC-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Status[Draft / In review / Approved / Superseded]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 updatedYYYY-MM-DD
Effective fromYYYY-MM-DD
Classification[Internal]
Standard and editionISO/IEC 27001:2022 + Amd 1:2024 (A.8.1, cited only); ISO/IEC 27002:2022
Next scheduled reviewYYYY-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

RoleNameDecisionDate
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

VersionDateAuthorChange
1.0YYYY-MM-DD[@owner]First issue
[x.y]YYYY-MM-DD[@author][Change summary]

Contents

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.

ItemValue
In scopeLaptops, 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 methodNative 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 controlsA.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

RoleResponsibilities
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 managersApprove the device category a person needs, confirm returns at exit
Every userUses only permitted devices, keeps them updated and locked, reports loss or theft at once

3. Device categories and permitted use

CategoryDescriptionMay accessMay not access
C1 Corporate managed computerOrganization-owned laptop or desktop, fully enrolled in MDM and EDRAll systems the user is authorised for, including restricted data and admin toolsNone by category (access control rules still apply)
C2 Corporate managed mobileOrganization-owned phone or tablet, fully enrolledE-mail, chat, collaboration, MFA authenticator, approved business appsAdmin consoles, bulk export of restricted data
C3 BYOD mobile with app protectionPersonal phone or tablet using managed apps or a work profile, no full device managementE-mail, chat, calendar, documents in managed apps, MFA authenticatorRestricted data downloads outside managed apps, admin consoles
C4 BYOD or third-party computer, browser onlyPersonal or contractor laptop reaching services through a browser session with session controlsWeb versions of e-mail and collaboration, with download and print blockedSource code, production consoles, local sync of files
C5 Shared or kiosk deviceMeeting-room PCs, reception terminals, training laptopsNamed functions only (signage, visitor sign-in)Personal sign-in to business systems

Rules:

  1. A personally owned computer is never used to store organization information locally. Use category C4 or request a C1 device.
  2. Privileged access (administration of production, identity or security tooling) is allowed only from category C1 devices, as set in security/privileged-access-standard.
  3. A person may enrol at most [two] personal mobile devices in C3.
  4. 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

RequirementC1 Corporate computerC2 Corporate mobileC3 BYOD mobileC4 Browser only
EnrolmentFull MDM, enrolled at purchase through automated enrolmentFull MDMApp protection policy or work profileNone, session controls at the identity provider
Encryption at restFull-disk encryption on, recovery key escrowed in MDMDevice encryption on (platform default)Device encryption on, checked at enrolmentNot checked, no local storage permitted
Screen lockAuto-lock after [5] minutes, password or biometricAuto-lock after [2] minutes, PIN of at least [6] digitsDevice PIN of at least [6] digits, app PIN for managed appsSession timeout [30] minutes idle
Supported OSVendor-supported version onlyVendor-supported version onlyVendor-supported version, minimum [OS version] set in policySupported browser version
PatchingSection 6 deadlinesSection 6 deadlinesMinimum OS level enforced at sign-inBrowser up to date at sign-in
Malware protectionEDR per DOC-ISMS-059Mobile threat defence [Yes / No]Jailbreak and root detection in managed appsNot applicable
Host firewallOn, managed centrallyPlatform defaultPlatform defaultNot applicable
Local admin rightsRemoved by default, time-bound elevation on requestNot applicableNot applicableNot applicable
Configuration baselineDOC-ISMS-060 platform baselineDOC-ISMS-060 mobile baselineNot applicableNot applicable
Backup of work dataWork files in organization cloud storage, no reliance on local copiesSameSameSame

Example rule entries for the rule log:

Rule IDCategoryRuleEnforced byEvidence
END-RULE-001 (Example)C1Full-disk encryption on, key escrowedMDM compliance policyMonthly MDM encryption report
END-RULE-002 (Example)C1, C2OS version not older than vendor supportMDM compliance policy plus identity conditional accessNon-compliant device list
END-RULE-003 (Example)C3Managed apps block copy and paste to unmanaged appsApp protection policyPolicy export, quarterly
END-RULE-004 (Example)C4Download, print and clipboard blocked in browser sessionsSession control at identity providerSession policy export

5. Device lifecycle

  1. Request and approval. The line manager approves the category.
  2. Procure. Buy only from approved channels that support automated enrolment, so the device is managed from first boot.
  3. Enrol. The device receives the MDM profile, EDR agent and the platform baseline before the user signs in to business systems.
  4. Issue. Record the device in the asset inventory (DOC-ISMS-012) with serial number, user and category. The user acknowledges this policy (section 15).
  5. Operate. Patching, monitoring and compliance checks run continuously (sections 6 and 11).
  6. Repair. Before third-party repair, remove the storage or wipe the device, or use a repair service bound by confidentiality terms.
  7. Reissue. Wipe and re-enrol before a new user receives it.
  8. 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 typeDeadline from release (Example)Enforcement
Actively exploited vulnerability (for example listed in the CISA Known Exploited Vulnerabilities catalogue)[3] daysForced install and restart after a [24]-hour deferral
Critical or high security update[14] daysForced after deferral period
Other security updates[30] daysAutomatic
Feature or major OS version[90] days after the organization approves itStaged rings: IT pilot, early adopters, all
Browser and productivity appsAutomatic, [7] daysAuto-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

  1. 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.
  2. Local administrator rights are removed. Time-bound elevation is granted through [elevation tool] with the reason logged.
  3. Application control blocks known-bad and unapproved executables and scripts according to DOC-ISMS-059.
  4. Browser extensions are limited to an allow-list managed centrally.
  5. Generative AI tools and plug-ins follow ai-data/ai-usage-policy.
  6. On C3 devices only the managed apps listed in [app list] may open organization data.

8. Separation of work data on BYOD

MeasureRequirement
Container method[Work profile on Android, managed apps with app protection on iOS and iPadOS, or managed browser]
Data flowCopy, paste, save-as and share from managed to unmanaged apps blocked
BackupWork data excluded from personal device backups where the platform allows
AuthenticationApp PIN or biometric after [30] minutes inactive, plus MFA at sign-in
Offline accessManaged apps wipe cached work data after [30] days without sign-in
Selective wipeRemoves managed apps and work data only, never personal content
Minimum device stateNot 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 seeThe organization cannot see
Device model, OS version, device namePersonal e-mail, messages, photos, contacts
Whether the device lock and encryption are onBrowsing history outside managed apps
Whether the device is jailbroken or rootedLocation (not collected)
List of managed apps and their versionsPersonal apps and their content
Sign-in times to organization servicesPhone call or messaging records
  1. Data collected is used only to protect organization information and to decide whether the device may connect.
  2. Device data is retained for [90] days after unenrolment, then deleted.
  3. The organization never performs a full wipe of a personally owned device. Only selective wipe is used.
  4. 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.
  5. A staff privacy notice describes this processing and is listed in the records of processing where those are kept (compliance/gdpr-ropa).
  6. Costs: [the organization pays a monthly allowance of USD [x] / no allowance]. Use your local currency.

10. Lost or stolen devices

  1. 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.
  2. The service desk logs the event in the incident register (DOC-ISMS-021) following the security event reporting procedure (DOC-ISMS-023).
  3. Security operations lock the device and revoke sessions and refresh tokens within [1] hour of the report.
  4. Corporate devices are fully wiped. BYOD devices receive a selective wipe.
  5. 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.
  6. Theft is reported to the police where required by insurance or law. Keep the crime reference with the record.

11. Compliance monitoring and enforcement

StateTriggerEffect
CompliantAll section 4 checks passFull access for its category
GraceA check fails (for example a pending patch)Access continues, user notified daily, grace period [72] hours
BlockedGrace period ends, or a critical check fails (encryption off, jailbreak, EDR missing)Conditional access blocks organization services until fixed
RetiredDevice returned, lost or replacedRemoved 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.

MetricFormulaTarget (Example)
Fleet complianceCompliant devices / all enrolled devicesAt least 97%
Encryption coverageC1 devices with encryption on / all C1 devices100%
Patch latencyMedian days from release to install, critical updatesUnder 7 days
Unmanaged accessSign-ins from unmanaged devices outside C4 rules0
Time to lockMedian minutes from loss report to lockUnder 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 IDDevice and ruleCompensating controlExpiry
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 check2027-06-30

13. Size tiers

AspectSmall: 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 optionalC1 laptops for all staff, C2 phones for on-call and clinical support teams, C3 for othersC1 for office staff, C5 shared terminals on plant floors, OT stations governed separately
ToolingMDM and app protection from the productivity suite, one EDR productDedicated MDM, EDR with managed detection serviceRegional MDM tenants or groups per country, EDR integrated with SIEM
OwnershipHead of Engineering Operations (0.5 FTE ISMS manager) with one IT generalistIT operations team, security team of 3 for monitoringGroup IT with site IT leads, CISO security office for policy and monitoring
BYOD privacySingle noticeNotice reviewed by privacy lead (processor and controller roles)Notice per country to meet local employment and privacy law, works council consultation where required
ReportingMonthly compliance export reviewed by ISMS managerWeekly dashboard, quarterly steering reportPer-site metrics rolled into group report

14. Records and evidence

RecordOwnerLocationRetention (Example)
Device inventory with category and owner[@head-of-it]MDM and asset inventory DOC-ISMS-012Life of device plus 1 year
MDM compliance and encryption reports[@head-of-it]MDM console exports, ISMS evidence folder3 years (one certification cycle)
EDR coverage report[@secops]EDR console exports3 years
Policy acknowledgements[@hr-lead]HR systemEmployment plus [6] years
Lost and stolen device records[@secops]Incident register DOC-ISMS-0213 years minimum
Disposal and sanitisation certificates[@head-of-it]Equipment disposal and reuse record DOC-ISMS-0576 years
Exceptions[@isms-manager]Exception registerExpiry 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.

NameDevice categoryDevice IDSignatureDate
[Name][C1 / C2 / C3 / C4][Asset tag or enrolment ID][Signature]YYYY-MM-DD

16. References

ReferenceEditionUse
ISO/IEC 27001:2022 + Amd 1:2024, https://www.iso.org/standard/82875.htmlCurrent, Amd 1 https://www.iso.org/standard/88435.htmlAnnex A control A.8.1 and related controls
ISO/IEC 27002:2022, https://www.iso.org/standard/75652.htmlCurrentControl guidance and attributes
NIST SP 800-124 Rev. 2, Guidelines for Managing the Security of Mobile Devices in the EnterpriseMay 2023Mobile device management concepts (free public source)
CISA Known Exploited Vulnerabilities catalogueLive cataloguePrioritising patches
GDPR (Regulation (EU) 2016/679)As amendedExample 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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