Terms of service.

1. The service

ArgusLeaf monitors public Certificate Transparency logs and other public data sources for domain names that statistically resemble brand terms you provide. The service is operated by an independent security researcher ("Operator"). We reserve the right to modify, suspend, or discontinue the service at any time, with reasonable notice where possible.

2. Eligibility

You must be authorised to request monitoring for the domain(s) you submit. You represent that you have the authority to act on behalf of the organisation you name in your application.

Submitting a domain you don't control — to monitor a competitor, an individual, or an organisation you're not affiliated with — is a material breach of these terms and may be referred to law enforcement. We verify domain ownership via DNS TXT record before activating monitoring.

3. What the service is not

ArgusLeaf is not a legal service. We do not provide legal advice. A finding from ArgusLeaf is an automated signal — not a confirmed case of abuse, phishing, or trademark infringement.

4. Acceptable use

You may not use ArgusLeaf to:

• Monitor individuals — only organisations and brands;
• Attempt to identify private persons;
• Circumvent the DNS ownership verification process;
• Submit false information to obtain monitoring access;
• Reverse-engineer, scrape, or overload the service infrastructure;
• Use the service in any way that violates applicable law.

5. Data you provide

By applying for monitoring, you provide: organisation name, contact name, email address, and brand terms. We use this data only to provide the monitoring service. We don't sell it, share it with third parties, or use it for advertising. See our Privacy Policy for full details.

6. Observatory

Observatory data — aggregate sector statistics and campaign trends — is published openly under CC BY 4.0. Aggregate statistics may be reproduced with attribution. Individual monitoring findings (Watch data) are never published.

7. Liability

The service is provided as-is, without warranty of any kind, express or implied. We are not liable for: missed detections, false positives, service outages, data loss, or any actions you take based on alerts. To the maximum extent permitted by applicable law, our total liability to you is zero monetary damages.

8. Termination

We may terminate your monitoring account at any time for breach of these terms. You may cancel at any time by emailing [email protected]. Upon termination, your watch-list data will be deleted within 30 days.

9. Governing law

These terms are governed by the laws of the jurisdiction in which the Operator is resident. Disputes shall be resolved by binding arbitration or the courts of that jurisdiction. You agree to submit to the personal jurisdiction of those courts.

10. Changes to these terms

We'll email active users at least 14 days before material changes take effect. Continued use of the service after that period constitutes acceptance of the revised terms. We'll keep past versions accessible at this URL with a dated changelog.

Questions about these terms: [email protected]