  We propose a step towards a resolution to black hole information paradox by
analyzing scattering amplitudes of a complex scalar field around a
Schwarzschild black hole. The scattering cross section reveals much information
on the incoming state but exhibits flux loss at the same time. The flux loss
should be temporary, and indicate mass growth of the black hole. The black hole
should Hawking-radiate subsequently, thereby, compensating for the flux loss.
{By examining the purity issue}, we comment on the possibility that information
bleaching may be the key to the paradox.
