Child Safety

This document sets out Mujō's standards against Child Sexual Abuse and Exploitation (CSAE), including CSAM (Child Sexual Abuse Material). These standards apply to the Mujō messaging application and all related relay infrastructure (collectively, the "Service").

1. Age Requirement

Mujō is intended for users aged 16 and above. Persons under 16 are not permitted to use the Service.

2. Zero Tolerance Policy (CSAE / CSAM)

Mujō has zero tolerance for CSAE and CSAM. Content or behaviour that sexualises or exploits minors is strictly prohibited, without exception.

Prohibited content and behaviour includes, without limitation:

• Any CSAM, or content depicting, promoting, or facilitating the sexual exploitation of minors;
• Grooming, coercion, sexual solicitation, or sexualised communication involving minors;
• Content that encourages, normalises, or instructs sexual activity with minors;
• Requests for sexual content involving minors, including framing as "roleplay" or "fiction";
• Links to external services that host or facilitate CSAE or CSAM;
• Any attempt to trade, distribute, store, or promote CSAM in any form.

3. Technical Architecture and Its Limits

Mujō’s relay infrastructure is architecturally incapable of reading message content all messages are end-to-end encrypted before leaving the sender's device, and no decryption key is held by æ Aeonian Engineering Limited or any third party. This is a deliberate design choice to protect user privacy.

This means that content-based detection of CSAM at the relay level is technically impossible by design. This is consistent with the architecture of other end-to-end encrypted communications services.

Despite this technical constraint, we take the following steps to enforce our zero tolerance policy:

• Users may report suspected CSAE/CSAM behaviour via the contact details below;
• Upon credible report, the associated device token is immediately invalidated and access terminated;
• Where legally required, we preserve relay metadata (not content) associated with the token and cooperate with competent authorities;
• We cooperate fully with lawful requests from law enforcement under Hong Kong law and applicable international frameworks.

4. Reporting and Enforcement

Users who encounter or suspect CSAE or CSAM activity on Mujō should report it immediately:

Safety contact: safety@parta.app safety@

Enforcement actions may include:

• Immediate invalidation of the associated device token and termination of relay access;
• Preservation of relay metadata records where required for safety, security, or legal compliance;
• Escalation to competent authorities, including the Hong Kong Police Force, Interpol, and NCMEC where applicable and required by law.

5. Cooperation with Authorities

Where required by applicable law, or when we determine it is necessary to protect minors, we will report suspected CSAE or CSAM to competent authorities and cooperate fully with lawful investigative requests. We will preserve relay metadata associated with reported device tokens for as long as legally required.

6. User Responsibility

Users are solely responsible for the content they transmit. End-to-end encryption protects privacy it does not confer legal immunity. Transmission of CSAM is a serious criminal offence in virtually every jurisdiction worldwide, including Hong Kong , EU member states, the United Kingdom, and the United States.

7. Contact

Safety reports: safety@parta.app
Legal: legal@parta.app
General: info@parta.app