Terms of use

Last updated: November 1, 2026.

The software

Interloper (the app) is provided by Northkeep Software. You may install and use it on PCs you own or are authorised to administer. You may not use it to inspect a computer you do not have permission to inspect.

The app is a diagnostic tool. Scanning is read-only. Fixes are applied only when you choose to apply them, after the app has described what it will do; you are responsible for that choice. The app records every fix and offers an undo, but we cannot guarantee that every change on every PC can be reversed. Back up anything you cannot afford to lose before applying fixes, and before changing firmware settings.

No scanner finds everything. A GREEN verdict means the checks Interloper runs found nothing; it is not a guarantee that a PC is free of malware. Keep an antivirus product running.

The service

The optional account service stores your uploaded reports and provides the dashboard, alerts and the paid plans. The free plan may be changed or withdrawn with notice. Paid plans (Watch and Technician) are billed in advance monthly or yearly through Stripe and renew automatically until cancelled; cancel at any time from Account > Manage subscription and the plan stays active until the end of the paid period. Refunds for the current period are given on request within 14 days of a charge.

You are responsible for keeping your password safe and for anything done through your account. We may suspend accounts used to attack the service or other people.

Warranty and liability

The software and service are provided "as is", without warranty of any kind. To the fullest extent permitted by law, Northkeep Software is not liable for any indirect, incidental or consequential damages, or for any loss of data, arising from the use of the software or service, and our total liability is limited to the amount you paid us in the twelve months before the claim.

Changes and contact

We may update these terms; the date above changes when we do. Questions: support@northkeepsoftware.com.