Legal · EULA v1.0

End User Licence Agreement

Edition of 12 September 2026. Effective from publication. This English text is a convenience translation of the Russian edition; in case of discrepancies the Russian edition prevails, except where mandatory rules of the Licensee's jurisdiction require otherwise.

This End User Licence Agreement (the "Agreement") is entered into between the operator of the Shield Checker service (the "Licensor", "we") and the individual or legal entity that registers an account, installs the application, integrates the SDK or otherwise uses the Shield Checker software, API, website, reports and accompanying materials (together, the "Service") (the "Licensee", "you"). By clicking "Sign up", installing or using the Service you confirm that you have read the Agreement, have the legal capacity to enter into it and accept its terms in full. If you act on behalf of an organisation, you warrant that you are authorised to bind it to this Agreement.

1. Subject and purpose of the Service

1.1. Shield Checker is a software toolkit for developers and information-security professionals intended for assessing the integrity of mobile devices and their runtime environment, testing the resilience of your own protection systems and obtaining technical risk signals (indicators of OS modification, emulation, instrumentation, network anomalies, document-capture and biometric quality during identity verification, etc.).

1.2. The Service is a tool of defensive purpose. It provides the Licensee with observations about the state of a device and its environment and does not modify, hide or spoof device data, does not interact with third-party systems and is not intended to influence the outcome of third-party checks.

1.3. Outputs of the Service (verdicts, codes, risk scores, reports) are probabilistic technical signals and do not constitute a legally binding opinion, identification of a person, a decision to provide services or confirmation of compliance with any requirement. The Licensee bears responsibility for decisions made on the basis of such signals.

2. Grant of licence

2.1. Subject to compliance with the Agreement, the Licensor grants the Licensee a limited, non-exclusive, non-transferable, revocable, non-sublicensable licence to use the Service within the scope of the purchased tier solely for the purposes set out in Section 1 and only in relation to devices, systems, applications and data that the Licensee owns, administers or has the explicit written permission of the rights holder to test.

2.2. All rights to the Service, including source and object code, algorithms, models, signature databases, the code registry, design, trademarks and documentation, belong to the Licensor or its licensors and are protected by intellectual-property law (including Directive 2009/24/EC, Part Four of the Civil Code of the Russian Federation and Title 17 of the United States Code). The Agreement does not transfer any rights to the Licensee other than those expressly stated.

2.3. Open-source components included in the Service are licensed under their respective licences; the list is available on request.

3. Prohibited use

3.1. The Licensee shall not, and shall not permit third parties to, use the Service for:

bypassing, disabling, weakening, researching with a view to bypass, or otherwise neutralising protection means, anti-fraud systems, KYC/AML procedures, access-restriction or licensing mechanisms that belong to or are applied by third parties, without the explicit written permission of their owner;
fraud, deception, unauthorised access, identity theft, creating or operating multiple, fake or anonymous accounts, evading bans, sanctions or age restrictions, or any assistance with such acts;
forging, substituting or distorting documents, biometric data, geolocation, device identifiers or network attributes when interacting with third parties;
unauthorised access to devices, systems or data (including acts punishable under Articles 272–274.1 of the Criminal Code of the Russian Federation, 18 U.S.C. § 1030 (CFAA), Directive 2013/40/EU and national information-security laws);
collecting, processing or transferring personal data without the proper legal basis, notices and consents required by applicable law;
violating the terms of use of app stores, carriers, platforms and third-party services;
decompiling, disassembling, reverse engineering, extracting algorithms, model weights and signatures (except where such right is expressly granted by mandatory rules, e.g. Article 6 of Directive 2009/24/EC or Article 1280 of the Civil Code of the Russian Federation, and only within the limits they set);
reselling, renting, sharing access, building competing products on the basis of the Service, or automated bulk extraction of results;
any acts that violate applicable law, third-party rights or public order.

3.2. The Licensee independently determines the purposes of use and bears full responsibility for the lawfulness of using the Service in its jurisdiction, including obtaining all required permissions from the owners of the systems being tested.

4. Account, tiers and payment

4.1. Access to paid features is provided under the tiers published on the website, as credits (units of payment for checks) or a subscription. Prices are stated in US dollars; payment is accepted via Telegram Stars, cryptocurrency or other stated methods. Cryptocurrency transfers are deemed executed after the required number of network confirmations; the rate is locked at the moment the invoice is issued.

4.2. Credits are debited when a check with full disclosure is performed and do not expire; a subscription extends the current access period. Unused credits and the subscription period are non-refundable, except in cases of non-performance of the Service through the Licensor's fault or where a refund is required by mandatory rules (in particular the EU consumer's right of withdrawal within 14 days before performance of a digital service begins, which the consumer waives by requesting immediate access).

4.3. The Licensee must keep credentials confidential and report any compromise immediately. All actions under the account are deemed performed by the Licensee.

5. Data, privacy and telemetry

5.1. Data processing is governed by the Privacy Policy, which forms an integral part of the Agreement. The Service processes technical data of devices and runtime environments; when the document-and-face verification module is used — images and features extracted from them. The Licensee warrants that it has obtained all necessary consents and legal bases in respect of persons whose data are processed on its initiative and acts in that respect as the controller, while the Licensor acts as a processor on its instructions.

5.2. The Licensor may use de-identified and aggregated technical data to develop detectors, for statistics and to secure the Service.

6. Disclaimer of warranties

6.1. THE SERVICE IS PROVIDED "AS IS" AND "AS AVAILABLE". TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE LICENSOR DISCLAIMS ALL WARRANTIES, EXPRESS AND IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT, ACCURACY, COMPLETENESS AND UNINTERRUPTED OPERATION. Detectors are probabilistic; false positives and false negatives are possible.

6.2. Section 6 does not limit consumer rights that cannot be limited under applicable law (including statutory conformity guarantees for digital content under Directive (EU) 2019/770 and the Russian Consumer Protection Law).

7. Limitation of liability

7.1. TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE LICENSOR IS NOT LIABLE FOR INDIRECT, INCIDENTAL OR PUNITIVE DAMAGES, LOST PROFITS, LOSS OF DATA OR GOODWILL, OR FOR DECISIONS MADE BY THE LICENSEE OR THIRD PARTIES ON THE BASIS OF THE SERVICE'S OUTPUT. THE LICENSOR'S AGGREGATE LIABILITY IS LIMITED TO THE AMOUNT PAID BY THE LICENSEE IN THE 12 MONTHS PRECEDING THE EVENT.

7.2. The limitations do not apply to liability for wilful misconduct, gross negligence, injury to life or health, or in other cases where limitation is prohibited by applicable law (in particular § 309 BGB, Article 401 of the Civil Code of the Russian Federation, laws of individual US states).

8. Licensee's responsibility and indemnity

8.1. The Licensor does not control and is not aware of the specific purposes for which the Licensee uses the Service and cannot verify whether the Licensee holds rights to the systems being tested. Any use of the Service in breach of Section 3 is made solely at the Licensee's own will and responsibility.

8.2. The Licensee shall indemnify and hold harmless the Licensor, its affiliates, employees and partners against all losses, costs (including reasonable legal fees), fines and third-party claims arising from the Licensee's breach of the Agreement, applicable law or third-party rights.

8.3. The Licensor may cooperate with law-enforcement authorities and rights holders in the manner prescribed by law, including disclosure of account data upon a lawful request.

9. Suspension and termination

9.1. The Licensor may immediately suspend or terminate access upon a reasonable suspicion of a breach of Section 3, non-payment, a request from a public authority or a threat to the security of the Service, notifying the Licensee where permissible. Upon termination for breach, unused credits and subscription are not refunded.

9.2. The Licensee may stop using the Service at any time by deleting the account. Sections 2.2, 3, 5–8 and 10–12 survive termination.

10. Export control and sanctions

The Licensee confirms that it is not located in a jurisdiction, and is not included in lists, subject to prohibitions under applicable export-control and sanctions law (including the US EAR, EU regulations and national measures), and will not use the Service in violation of such rules.

11. Governing law and dispute resolution

11.1. Licensees in the European Union / EEA. The Agreement is governed by the law of the consumer's country of habitual residence to the extent of its mandatory rules; otherwise by the law specified in clause 11.4. Consumers may bring proceedings before the courts of their place of residence and use the ODR platform (ec.europa.eu/odr).

11.2. Licensees in the Russian Federation. The Agreement is a licence agreement within the meaning of Articles 1235–1238 of the Civil Code of the Russian Federation, concluded under Article 1286 (simplified procedure). Consumers enjoy the protection of Law No. 2300-1; other disputes are subject to a mandatory pre-trial claim procedure (30 days) before the competent court at the Licensor's location.

11.3. Licensees in the United States. The Agreement is governed by the laws of the State of Delaware without regard to conflict-of-law rules. Any dispute shall be resolved by individual binding arbitration under the AAA rules (Federal Arbitration Act); THE PARTIES WAIVE CLASS ACTIONS AND JURY TRIAL to the extent permitted by law. You may opt out of the arbitration clause by notifying us within 30 days of accepting the Agreement. Copyright-infringement notices are sent to the DMCA agent via the support contacts.

11.4. Other jurisdictions. The law of the Licensor's country of incorporation applies; disputes are heard by the competent court at its location unless mandatory rules provide otherwise.

12. Miscellaneous

12.1. The Licensor may amend the Agreement, giving at least 14 days' notice of material changes by publication on the website and/or in the account. Continued use constitutes acceptance; if you disagree you may stop using the Service before the changes take effect.

12.2. Invalidity of a provision does not affect the others. Failure to exercise a right is not a waiver. The Licensee may not assign rights under the Agreement without the Licensor's consent; the Licensor may assign them in a reorganisation or business transfer.

12.3. The Agreement, together with the Privacy Policy and the published tiers, constitutes the entire agreement of the parties regarding the Service and supersedes all prior arrangements.

12.4. Contact: @MarkAntifrodovich. The Licensor's details are stated in the account and in payment documents.