Terms of Service

Last Updated: September 23, 2026

Welcome to proton. By downloading, installing, or using our Windows desktop network encryption software (the "Software") or services, you agree to be bound by these Terms of Service ("Terms"). If you do not agree to these terms, please do not use the Software.

1. Description of Service

We provide users with enterprise-grade network encryption tools designed to protect digital data, shield connections on public Wi-Fi networks, and enhance personal desktop privacy. The service is provided strictly on an "as-is" and "as-available" basis.

2. Acceptable Use Policy & Legal Compliance

You agree to use our Software only for lawful purposes. You are strictly prohibited from using our services to:

Violate any local, national, or international laws or regulations (including the cybersecurity laws of Vietnam, the Philippines, Thailand, and Malaysia).
Transmit, upload, or download any malicious software, viruses, or harmful cyber code.
Infringe upon the intellectual property rights, copyrights, or privacy of third parties.
Engage in any activities that disrupt, damage, or overload our server infrastructure or networks.

We reserve the right to terminate accounts immediately and without notice if a user is found violating this Acceptable Use Policy.

3. Account Responsibility

If you create an account with us, you are responsible for maintaining the confidentiality of your login credentials. You are entirely responsible for all activities that occur under your account.

4. Intellectual Property

The Software, its user interfaces, designs, logos, and underlying encryption codes are the exclusive intellectual property of [Your Company Name]. You are granted a limited, non-exclusive, non-transferable license to use the software on your Windows devices for personal or internal business security purposes.

5. Limitation of Liability

To the maximum extent permitted by applicable law, proton shall not be liable for any indirect, incidental, special, exemplary, or consequential damages arising out of or in connection with the use or inability to use the Software, including but not limited to network downtime or loss of data.

6. Modifications to Terms

We reserve the right to modify or replace these Terms at any time. We will indicate the date of the latest updates at the top of this page. Your continued use of the software after updates are posted constitutes acceptance of the modified Terms.

7. Contact Information

For any legal inquiries or questions regarding these Terms, please reach out to us at: