Personal Device Security for Medium- to High-Risk Work
A personal device isn't set up the way a work laptop is. Nobody's checked that it's locked down, up to date, or free of other apps and accounts mixed in with work stuff. You can't turn it into a full company laptop that's not realistic. What you can do is either keep the sensitive work in a separate, protected space on the device that can be wiped if needed, or avoid putting it on the device at all.
The basics
| Control | What it means | Why it matters |
|---|---|---|
| Encryption | Turn on full-disk encryption (BitLocker on Windows, FileVault on Mac) and ensure it's on | Phones and laptops don't always come encrypted by default |
| Screen lock | Auto-lock after 5 minutes or less, with a PIN/password or fingerprint/face unlock | Stops someone from just picking up an unlocked device and looking through it |
| Keep devices and browsers updated | Turn on automatic updates | Most break-ins happen through known holes that a software update would close |
| Two-factor login | Require a second step (code, key, or app approval) to log in anywhere sensitive | A stolen password alone shouldn't be enough to get into anything important |
| Separate work space | Use a work profile or separate browser profile that keeps work stuff separate from personal photos, texts, apps | Lets the work data get wiped without touching anything personal on the device |
| No random file syncing | Don't let personal Dropbox, personal Google Drive, etc. touch work files | Keeps sensitive files from quietly ending up in the wrong place |
| Remote wipe | Make sure the work data can be wiped remotely if the device is lost, using Google Workspace, MS 365 or another service | Losing a device only becomes a real problem if the data on it is still readable |
Quick test: if your device were lost tonight, could whoever found it get into sensitive records, passwords, or personal info? If yes, it needs all of the above before it's used for work.
Putting it into practice
New staff: A new staffer's device should meet the basics above before it's allowed anywhere near sensitive work. Check that encryption is on and the software is current.
Handling the data: For medium-risk work, a separate work profile with some basic restrictions (no copying files out, no plugging in random USB drives) is usually enough. For high-risk work, it's better if the sensitive data never lands on the device at all. Access it through a browser-based tool or remote desktop instead.
By how sensitive the work is:
| Medium-risk work | High-risk work | |
|---|---|---|
| Where the data lives | In a separate work space on the device | Nowhere on the device - accessed remotely only |
| Copying or downloading files | Restricted | Not allowed |
| Staying logged in | Fine day-to-day, re-verify for sensitive actions | Log back in often |
If a device is lost, stolen, or acting weird
Wipe the work data remotely right away. Cut off that device's access and log it out everywhere. Look back through recent activity on the account for anything unusual. Report it right away.