Originally Posted by tigermtb

When a Direct Buy is purchased, if we detect malware on it, it is removed and the Advertiser is refunded for the time they haven't used.

This means if 2 days out of 7 were used, you get paid for those 2 days and the spot is then able to be sold to someone else.

I get your concern but this isn't the result of a "failure" to detect, this is a removal because something unacceptable was found and removed.
In this case it seems to be related to a lander URL.