Security & Responsible Use

Updated June 27, 2026

Zy Seller is designed carefully to reduce risk to your account — but collecting data from a third-party platform always carries some risk you should weigh yourself. No approach guarantees absolute safety.

How the app operates

• A real browser: you log in yourself in the app's browser window. The app only reads visible content, the same way a normal user would.
• No internal/private API calls to the platform; no protocol tampering.
• No cookie extraction, no password storage.
• Timing spread + a daily post cap keep access patterns natural; the app pauses automatically when the platform requests verification instead of trying to bypass it.

Responsible use

• Only use it on groups/content you have lawful access to.
• Comply with platform terms and personal-data regulations (e.g. Decree 13/2023/NĐ-CP).
• Contact leads lawfully, respect opt-outs; don't spam.
• Consider using a dedicated account for prospecting if you're concerned about account risk.

Data protection

• Phone numbers are encrypted at rest on your device; a "delete all" option is available.
• Login tokens and your Facebook session are stored via the OS keychain.
• Our servers never store lead content — see the Privacy policy.

Reporting a security issue

If you find a security vulnerability, please contact [email protected] so we can address it.