[Cryptography] Business opportunities in crypto

[Adam P. Goucher]

> A few years back I read about some folks making bids really fast.
> Kinda less than zero latency: They had an FPGA on a network card
> that started sending out a bid before the quote it was based on
> had been fully received. The trick being they could set the bid
> price at the last moment. They could also abandon sending if
> their guess was wrong.

The way that they 'abandon sending' is really clever: they just
flip a bit in the checksum at the tail-end of the packet (in order
to invalidate the checksum), after most of the packet has been
sent out, to cause it to be rejected by the receiver.

-- APG.