
Bring your own device (BYOD) policy guide
A BYOD policy has to do two jobs at once: protect company and client data on phones and laptops the company doesn't own, and tell employees honestly what the company can and cannot see. Here is what to put in it.
Reviewed by the ITRS security team · Last updated
Which devices and data are covered
Be specific. "Personal devices" can mean a phone with Outlook on it, a home laptop used to open a client file, or a tablet a family member also uses. The policy should name which device types may access which data, and through which apps.
| Data or system | Personal phone | Personal computer |
|---|---|---|
Email, calendar, Teams | Allowed in protected apps only | Browser access only, no downloads (or not allowed) |
Client and HR files | View in protected apps; no local saving | Not allowed; use a company laptop |
Accounting and banking systems | Approval apps only (for MFA) | Not allowed |
Admin consoles | Not allowed | Not allowed |
Minimum security requirements
Keep the list short enough to verify, and enforce it with technology rather than trust wherever possible. The Canadian Centre for Cyber Security's baseline controls for small and medium organizations include securing mobility and using strong user authentication; these map directly to BYOD rules.
- A device screen lock (PIN, password or biometric) and automatic locking.
- A supported operating system that still receives security updates; updates installed promptly.
- No jailbroken or rooted devices.
- Company apps from official app stores only, signed in with the work account.
- Multi-factor authentication on the work account.
- Work data kept inside approved apps: no forwarding to personal email, no saving to personal cloud storage, no screenshots of client data to personal photo libraries.
What the company can and can't see
This is the section employees actually read. The Office of the Privacy Commissioner of Canada's guidance on privacy in the workplace stresses that monitoring should be limited to specific, appropriate purposes and that employers should be transparent about the purpose, nature and extent of monitoring. Write it plainly.
If you use Microsoft Intune app protection without enrolling personal phones, say so: the company can manage work data inside Outlook, Teams and OneDrive, see the app version and the device model and OS, and remove work data from those apps. It cannot see personal email, texts, photos, browsing history, location or other apps. If you do enroll personal devices, explain what additional information that exposes.
Selective wipe and departure
State what happens when someone leaves or a device is replaced: the company will remove work accounts and work data from the device, and will not wipe the whole device unless it is enrolled and the employee has agreed to that in writing. With app protection, an admin issues a selective wipe and work data is removed from the managed apps the next time they open.
Ask departing staff to confirm they have not kept copies of company data elsewhere, and make that confirmation part of the offboarding checklist.
Lost or stolen devices
Report immediately
Name who to call or message, including outside business hours.
Company actions
IT blocks sessions on the work account, issues a selective wipe, and checks sign-in logs for misuse.
Employee actions
Use the phone maker's find-my-device service to lock or erase if appropriate; change personal passwords; report theft to police.
Privacy assessment
If client or employee personal information may have been exposed, the company assesses whether it is a reportable breach.
Employee acknowledgement
Have each employee sign or electronically acknowledge the policy before their device is given access, and again when it changes. The acknowledgement should confirm they understand the security requirements, the limits on what the company sees, and the selective wipe process. Keep the acknowledgement with their HR file.
Review the policy yearly. Phone platforms and Microsoft's controls change, and so do the apps your staff use. Employment and privacy rules vary by province and sector; have your counsel review the final wording, particularly the monitoring and wipe sections.
Questions we hear
That is an employment and tax question, not a security one; many firms offer a stipend. Ask your accountant and employment counsel.
With app protection you can require a PIN for work apps without touching the phone's own settings. Requiring a device passcode needs enrollment or a written agreement.
Offer a company phone or no mobile access. The policy should say so plainly.
Related reading.
- PracticeManaged IT SupportHelpdesk and break/fix, networking, security systems, devices, Microsoft 365, cloud and backup.
- GuideProtecting company data on personal phones with Intune app protectionMost staff will not hand their personal phone over to company management, and they shouldn't have to.
- GuideWhat to do if a work or personal phone with company data is lostA missing phone exposes email, files and often the MFA codes that protect everything else. The steps differ depending on whether the company owns the phone.
- ArticleElectronic monitoring of employees in OntarioOntario employers with 25 or more employees must have a written policy saying whether and how they electronically monitor staff.
- GuideRemote and hybrid work security policyWhen work happens at kitchen tables, in cafés and at the cottage, the office firewall and the locked file room no longer protect you.
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