While setting up the DDoS botnet monitoring system,
we considered adding a component to query the attacked
website to find out whether or not an attack was successful.
We decided against implementing and using such a
component for several reasons. First and foremost, the
success of a Denial-of-service is subjective to the client
requesting the service. The large number of uncontrollable
factors impacting whether a client can still get a
response from an attacked server makes the results of
sampling unreliable.