How MiroTalk SFU Ensures Privacy and Security

MiroTalk SFU protects meetings through two layers: WebRTC's built-in SRTP encryption for all media streams, and a stated policy of not collecting or sharing personal information. Because it is open-source and self-hostable, you can also run it on your own infrastructure so meeting data never passes through a third party. These guarantees apply to the platform itself; the privacy of a given meeting still depends on who hosts it and who you invite.

Media encryption: SRTP over WebRTC

Every audio and video stream in MiroTalk SFU is carried over WebRTC and encrypted with Secure Real-time Transport Protocol (SRTP). This is not an optional add-on — it is how the underlying transport works. In practice:

• Audio, webcam video, and screen-share streams are encrypted in transit between participants.
• Encryption keys are negotiated per session through WebRTC's standard handshake rather than shared manually.
• Because MiroTalk SFU uses an SFU (Selective Forwarding Unit) architecture powered by Mediasoup, streams are routed through the server rather than sent peer-to-peer. That server forwards encrypted media; it does not need to decrypt it to route it.

The practical takeaway: a participant on the network cannot casually read another participant's media stream, and the SFU's job is forwarding, not inspecting.

Data handling: what the platform says it does

The site states plainly that data stays between you and your participants and that the project does not collect or share personal information. Combined with the "no download, plug-in, or login is required" entry flow, this means:

• You are not required to create an account or hand over an email to join a room.
• There is no advertising or analytics-driven profile built from your meeting content, per the site's description.
• Meeting content is not described as being stored or mined by the platform.

Treat these as the project's stated commitments. If your use case involves regulated data, verify them against the source code, since MiroTalk SFU is open-source and auditable.

Self-hosting: the strongest control

The most direct way to control privacy is to self-host MiroTalk SFU. The site describes it as an open-source, self-hosted WebRTC platform, which means you can deploy it on your own server and keep all signaling and media traffic inside your own network or cloud account.

When you self-host:

This is the option to choose when you need full control over data residency and retention. If you use a public instance instead, you are trusting whoever operates that instance.

Practical limits to keep in mind

Encryption and a no-collection policy cover the transport and the platform, but they do not cover everything:

• Your endpoint is your responsibility. A compromised browser or device can still expose what happens on screen.
• Recording and file sharing are user actions. If a participant records the meeting or downloads a shared file, that copy is outside the platform's protection.
• The host's instance matters. On a self-hosted deployment, the operator controls the server; on a public one, the operator does. Know which you are using.
• Verify, don't assume. Because the project is open-source, you can inspect how SRTP, signaling, and any optional features (recording, RTMP streaming, ChatGPT integration) handle data before relying on them for sensitive meetings.

For most teams, the combination of SRTP encryption, a no-login entry flow, a stated no-collection policy, and the option to self-host makes MiroTalk SFU a reasonable choice for privacy-conscious calls — provided you confirm the deployment model and treat endpoint and user actions as part of your own security boundary.