Legal

End User License Agreement

Last updated: 21.05.2026

This End User License Agreement (the «EULA») governs the installation and use of the Bastion Security Plesk extension and any associated binary or configuration artefact (collectively, the «Software») distributed by Fusengine Sàrl (CHE-144.098.128), Boulevard Saint-Martin 29, 1800 Vevey, Switzerland (the «Licensor»).

By installing or running the Software you accept this EULA. If you do not accept it, do not install the Software.

1. License grant

Subject to an active subscription to the Bastion Security service (see Terms of Service), Licensor grants the Licensee a non-exclusive, non-transferable, non-sublicensable right to install and run one instance of the Software on each Plesk Node covered by the subscription, solely for the protection of servers operated by the Licensee or its customers.

2. Restrictions

The Licensee shall not:

  • distribute, sell, rent, lease or sublicense the Software, in source or binary form;
  • reverse-engineer, decompile, disassemble or otherwise attempt to derive the source code of any compiled component (except to the extent expressly permitted by mandatory law);
  • circumvent or tamper with the license-validation, fingerprinting or update mechanisms;
  • use the Software to perform offensive security operations against systems the Licensee is not authorised to test;
  • remove or alter any copyright, trademark or attribution notice embedded in the Software.

3. Updates

Licensor may issue updates, patches and configuration changes through the Plesk Marketplace and the customer portal. Active subscribers are entitled to receive every such update. Updates are governed by this EULA unless an update is accompanied by a replacement EULA, in which case the replacement governs going forward.

4. Ownership and intellectual property

The Software is licensed, not sold. Title and all intellectual property rights in the Software, including modifications and derivative works produced by Licensor, remain exclusively with Licensor. No rights are granted by implication, estoppel or otherwise beyond those expressly stated in this EULA.

5. Third-party components

The Software interoperates with third-party components, including the CrowdSec engine, the Plesk extension SDK, nginx, and PHP-FPM. These components remain governed by their respective licenses. The present EULA does not modify nor override those licenses.

6. Term and termination

This EULA is effective on installation and remains in force as long as a valid subscription is active. The license terminates automatically upon expiry, cancellation or revocation of the subscription, or upon breach of this EULA. On termination the Licensee shall uninstall the Software from every Plesk Node and destroy any copy in its control.

Sections 2 (Restrictions), 4 (Ownership), 7 (Activation and deactivation, after-effects only), 8 (Warranty disclaimer), 9 (Limitation of liability), 11 (Governing law) and 12 (Miscellaneous) survive termination of this EULA.

7. Activation, deactivation and seat transfer

Each license key is bound to a single Plesk Node upon activation via cryptographic fingerprint. The Licensee may deactivate a license key from one Plesk Node and re-activate it on another (e.g., server migration, hardware change), subject to a fair-use limit of six (6) seat transfers per rolling twelve-month period. Excess transfers may be honored by Licensor on request but are not contractually guaranteed.

The Licensor reserves the right to remotely deactivate a license key in the following cases:

  • non-payment of subscription fees beyond the grace period defined in the Terms of Service;
  • material breach of this EULA that remains uncured after a thirty (30) day written notice;
  • confirmed fraudulent activity, license sharing, chargeback or sanctions violation.

Remote deactivation is a technical protection measure permitted under LDA art. 39a–39f and is disclosed at point of purchase in compliance with LCD art. 3 (transparency requirements for unfair commercial practices).

8. Warranty disclaimer

The Software is provided «as is» and «as available». To the maximum extent permitted by Swiss law, Licensor disclaims all warranties, express or implied, including merchantability, fitness for a particular purpose and non-infringement.

The Licensee shall notify Licensor in writing of any reproducible material defect within a reasonable period after discovery (CO art. 201 by analogy). Licensor’s sole obligation under this warranty is to use commercially reasonable efforts to correct the defect in a future release. The Licensee has no right to refund, rescission or set-off based on alleged defects outside this remedy.

9. Limitation of liability

To the maximum extent permitted by Swiss law (CO art. 100), Licensor’s total aggregate liability under this EULA is capped at the amount paid by the Licensee during the twelve (12) months preceding the event giving rise to the claim. Indirect, incidental, consequential or punitive damages, including loss of profits, loss of data, business interruption and loss of reputation, are excluded. This cap is cumulative with the cap in the Terms of Service.

Notwithstanding the foregoing, nothing in this EULA limits or excludes Licensor’s liability for damages caused by willful misconduct (dol) or gross negligence (faute grave), as such limitation would be void under article 100(1) of the Swiss Code of Obligations.

10. Export and compliance

The Software may not be exported, re-exported or transferred, directly or indirectly, in violation of any applicable export control law or sanctions regime, including Swiss, EU and US regulations.

11. Governing law and jurisdiction

This EULA is governed by Swiss substantive law, excluding its conflict-of-law rules and the United Nations Convention on Contracts for the International Sale of Goods. Exclusive jurisdiction lies with the ordinary courts of the canton of Vaud, Switzerland (CPC art. 10).

12. Miscellaneous

  • Severability. If any clause of this EULA is held unenforceable, the remaining clauses remain in full force; the unenforceable clause shall be construed to give it the closest enforceable meaning compatible with the parties’ original intent.
  • No waiver. Failure or delay by Licensor in enforcing any right is not a waiver of that right.
  • Notices. Legal notices to Licensor must be sent in writing to the registered seat of Fusengine Sàrl, Boulevard Saint-Martin 29, 1800 Vevey, Switzerland.
  • Binding language. The English version of this EULA prevails. Any translation is provided for convenience only.
  • Amendment. Material changes take effect thirty (30) days after publication on this page. Continued use of the Software after the effective date constitutes acceptance.