Legal

Terms of Service

Last updated 9 October 2026

These terms are an agreement between you (or the organisation you represent, "you" or the "Customer") and Josue Kouka, a sole proprietor operating as SybilZero in British Columbia, Canada ("we", "us"). They apply to SybilZero: our website, dashboard, browser script and API (the "Service"). By creating an account or using the Service you agree to them. If you use the Service for an organisation, you confirm you can bind it.

1. The Service

SybilZero scores sign-ups, logins and reward claims for signs that one person is behind several accounts, and returns a score, a verdict (allow, review or block) and reasons. Results are signals based on probabilities. They can be wrong, in both directions.

2. Accounts and API keys

• Give us accurate information and keep it up to date. Keep your password and API keys secret; you are responsible for what happens with them. Tell us promptly if one is exposed.
• Business use only. You must be at least the age of majority where you live.

3. Free trial, plans and billing

• New accounts get a 14-day free trial, without a card.
• Paid plans, what each includes and the price per extra check are on the pricing page. Subscriptions are billed monthly (or yearly, where offered) in advance through Stripe; usage above the included amount is billed afterwards. Prices exclude taxes.
• You can cancel at any time from the billing portal; the plan then ends at the close of the paid period. Fees already paid are not refunded, except where the law requires it or we decide otherwise.
• We will give 30 days' notice before a price change takes effect for you.
• If a payment fails we may suspend the account after reasonable notice.

4. How you may use the Service

You agree to:

• have a lawful basis for sending us your users' data, give them the notices the law requires, and respect their rights;
• hold any licence or authorisation your own business needs (for example, a gambling licence). SybilZero does not hold one and does not replace your compliance obligations;
• treat verdicts as one input to your own decisions, review borderline cases, and be able to explain and reverse a decision;
• not use the Service to discriminate unlawfully, or to make decisions that the law reserves for a human or requires special safeguards for, without those safeguards.

You agree not to:

• send special categories of personal data, government identifiers, card numbers, card security codes or passwords (payment fingerprints from your payment provider are fine; card numbers are not);
• probe, scan or load-test the Service beyond your plan, or try to evade, reverse engineer or disrupt it, or to learn how to avoid detection;
• resell or share access, or use the Service to build a competing product;
• break the law, infringe others' rights, or use the Service for harassment or surveillance of people.

We may suspend or limit access that threatens the Service or other customers, and will tell you why when we can.

5. Your data and ours

• Your data stays yours. You give us the right to process it to provide the Service, as described in the Privacy Policy and the Data Processing Addendum, which are part of these terms.
• The Service, including the software, scoring methods and documentation, belongs to us. We give you a limited, non-exclusive right to use it for your own business while you comply with these terms.
• If you send us feedback we may use it freely.

6. Confidentiality

Each of us will keep the other's non-public information confidential and use it only for this agreement, except where the law requires disclosure.

7. Availability and support

We work to keep the Service available and will tell you about planned downtime when we can, but we do not promise uninterrupted service. Support is by email at [email protected]; plans that include priority support or a service level say so on the pricing page. The Service may include open-source and third-party components under their own licences.

8. No warranty

The Service is provided "as is" and "as available". To the fullest extent the law allows, we disclaim all warranties, including that the Service will be accurate, error-free, or will detect every abusive account or avoid every false positive.

9. Liability

• To the fullest extent the law allows, we are not liable for indirect, incidental, special or consequential damages, or for lost profits, revenue, goodwill or data, even if warned of the possibility.
• Our total liability for everything connected with the Service is limited to the fees you paid us in the 12 months before the event giving rise to the claim.
• Nothing in these terms limits liability that cannot be limited by law.

You will defend and compensate us against third-party claims arising from your breach of section 4 or from your use of the Service in violation of law.

10. Ending the agreement

• You may stop using the Service and close your account at any time.
• We may end the agreement if you materially breach it and do not fix it within a reasonable time after notice, or immediately for serious abuse or non-payment.
• After closing, we delete your account data within 30 days (see the Privacy Policy). Before then you can export what you need. Sections that by their nature survive (confidentiality, liability, governing law, payment) continue.

11. Changes

We may update these terms. For material changes we will email you at least 30 days before they apply. If you keep using the Service afterwards you accept them; if you do not, you may close your account.

12. Governing law

These terms are governed by the laws of the Province of British Columbia and the federal laws of Canada applicable there. The courts of British Columbia have exclusive jurisdiction, except that either of us may seek urgent relief elsewhere to protect confidential information or intellectual property.

13. General

These terms, the Privacy Policy and the DPA are the whole agreement and replace earlier discussions. If a part is unenforceable the rest stays in force. You may not assign the agreement without our consent; we may assign it with the business. A failure to enforce a right is not a waiver. Notices to us go to [email protected]; notices to you go to your account email.

14. Contact

Josue Kouka, a sole proprietor operating as SybilZero in British Columbia, Canada. [email protected].

Questions about this page? Write to [email protected]. See also: Terms of Service, Privacy Policy, Data Processing Addendum.