Hsbc Online Banking Security Code -

The HSBC Digital Secure Key operates on the as defined in RFC 6238, a derivative of HMAC-based One-Time Password (HOTP). The formula is:

| Feature | HSBC Digital Secure Key | SMS OTP | Push Notification (e.g., HSBC UK's "Push") | | :--- | :--- | :--- | :--- | | | TOTP on device | Carrier network | App-to-app handshake | | User action | Read and type 6-digit code | Read and type 6-digit code | Tap "Approve" or "Deny" | | Network required | No (only for time sync) | Yes (cellular) | Yes (data/Wi-Fi) | | SIM-swap risk | None | High | None | | Phishing resistance | Moderate (bypassable via real-time proxy) | Low | High (transaction details visible on approval screen) | hsbc online banking security code