Security Awareness Briefing  //  Eriu Technology  //  Defensive Use Only

THE LOST
LAPTOP

Nicked from the car in ninety seconds.

A lost laptop is an inconvenience if it's encrypted — and a data breach if it isn't.

01 / What it is

Device encryption — BitLocker on Windows, FileVault on Mac — scrambles everything on the disk so it's useless without your login. Without it, a thief just pulls the drive and reads the lot, no password required. The same goes for phones and USB sticks.

02 / How it works
1
A laptop or phone is lost or stolen — car, café, airport.
2
If it's not encrypted, the thief reads the disk directly.
3
Saved logins, files and client data are all exposed.
4
You may be legally obliged to report it as a breach.

→ Encrypted and locked: a hardware loss. Unencrypted: a data breach walking out the door.

What's at risk

It's rarely just the device:

Saved passwordsBrowsers remember everything.
Client dataFiles, emails, contracts on disk.
Open sessionsStill logged into your accounts.
The breach reportA legal duty if data's exposed.
!
Turn on full-disk encryption todaySwitch on BitLocker (Windows) or FileVault (Mac) on every work device, and a PIN or biometric on every phone. It's free, it's built in, and it turns a stolen device from a disaster into a shrug. Do the same for any USB stick that leaves the building.
03 / Why it's dangerous
  • Unencrypted means readable — the login won't stop a thief.
  • Browsers hoard passwords a thief can harvest.
  • Open sessions may still be logged in.
  • It can be a reportable breach with real consequences.
04 / How you stop it
  • Turn on full-disk encryption on every laptop (BitLocker/FileVault).
  • PIN or biometric lock on every phone and tablet.
  • Enable remote wipe so you can erase a lost device.
  • Don't leave devices in cars or out of sight.
  • Encrypt USB drives — or don't put sensitive data on them.
Gone in ninety seconds · Encrypt first
An Eriu Technology security briefing  ·  Awareness & defence only