Is this new account eligible?
Begin with the protected action, the policy that defines eligibility and the system that can apply a response. Establish who owns a disputed decision before adding new evidence.
Evidence worth collecting
- Account and prior benefit history
- Device and network observations
- Verification and signup event context
A practical control sequence
- Define the offer eligibility rule on the server. Keep the account record and benefit record separate.
- Collect and associate risk evidence before granting the costly benefit. Store an unavailable result as its own state.
- Start with review or a reversible hold for ambiguous relationships. Test legitimate households, workspaces and shared devices.
Watch the boundary
A recognizable device is not a verified person. Email verification confirms a mailbox, while the product still needs to decide benefit eligibility.
Measure customer completion, confirmed outcomes, review effort and missing results within the same cohort. A rise in blocked activity alone does not show that the business is better protected.
