Privacy policy
Last updated 29 September 2026
We collect only what the Platform needs to run: your account details, your licence, and the trading data your engine reports. We never ask for your broker password or bank details, and we do not sell your information.
1. Who is responsible
Underground Trader Technologies is responsible for the personal information described here, as the responsible party under the Protection of Personal Information Act, 2013 (POPIA). Our Information Officer can be contacted at thabz@undergroundtradertechnologies.net.
2. What we collect
| Information | Why we need it |
|---|---|
| Your name, email address and password (stored only as a secure hash) | To create and secure your account, sign you in and contact you about the service |
| Your licence, API key and trading account number, and your broker's name | To connect your trading engine to your account and to enforce the licence |
| Trading data from your terminal: balance, equity, open positions, closed trades, signals, settings and chart data | To show it to you in the apps, calculate your statistics, run safety checks and send your briefings |
| Messages you send to Underground Sentinel, including voice converted to text | To answer your questions and keep your conversation history |
| Device information needed for notifications | To send alerts and briefings to your phone |
| Technical and error information | To keep the service working and fix problems |
We do not collect your broker password, your bank or card details, or any government ID. Payments, if any, are handled by the payment provider you pay through.
3. Service providers who process data for us
We use trusted providers to run the Platform. They process information only to provide their service to us:
- Cloud hosting and database (Railway), website and email routing (Cloudflare) and encrypted backups (GitHub).
- Push notifications (Google Firebase) and transactional email (Resend).
- Error monitoring (Sentry).
- AI language model providers, to answer Underground Sentinel questions when they are not answered on the owner's own hardware. Your question and the relevant account data needed to answer it are sent to them.
- Web search providers, for Sentinel questions about news and markets. Only the search terms are sent, not your account data.
4. Information stored outside South Africa
Some of these providers store or process information outside South Africa. We use providers that are bound by data protection law or agreements giving a level of protection comparable to POPIA, as section 72 of POPIA requires.
5. How long we keep it
We keep your account and trading records for as long as you have an account, so your history and statistics stay complete, and for a reasonable time afterwards where the law or a legitimate business need requires it. Detailed market data such as candle history is kept for a limited period and then deleted automatically.
6. How we protect it
Connections to the service are encrypted. Passwords are stored only as secure hashes. Access to data is limited to your own account. Backups are compressed and stored privately. The trading method itself is never shared with the AI assistant or any provider.
7. Your rights
Under POPIA you can ask us to tell you what personal information we hold about you, correct it, delete it, or object to how we use it. Email thabz@undergroundtradertechnologies.net and we will respond within a reasonable time. You also have the right to complain to the Information Regulator of South Africa.
8. This website
This website does not use advertising or tracking cookies. If you email us, we use your message only to reply to you.
9. Changes
We may update this policy. The date at the top shows the latest version, and we will tell you about significant changes through the app or by email.