(1) If:
(a) a person is receiving a social security payment on the basis of data in a computer; and
(b) the payment is cancelled, or the payment rate is reduced, by the operation of a provision of the social security law; and
(c) the cancellation or reduction is given effect by the operation of a computer program used under the control of the Secretary stopping payment or reducing the rate of payment;
the Secretary is taken to have made a determination that the provision referred to in paragraph (b) applies to the person's social security payment.
(2) A determination that is taken, by virtue of subsection (1), to have been made is taken to have been made on the day on which the cancellation or reduction took effect.