Defines the security type required for Binance Spot REST API endpoints.

This enum corresponds to the securityType field in the Binance API – General API Information.

Security type specifies what kind of authentication is needed when calling an endpoint.

Supported values:

• :NONE – No authentication required. Example: public market data endpoints.

• :TRADE – Endpoint requires an API key and a signed payload. Used for creating and managing orders.

• :USER_DATA – Endpoint requires an API key and a signed payload. Used for account information, balances, and order history.

• :USER_STREAM – Endpoint requires an API key. Used for starting and managing user data streams (WebSocket listen keys).