I read a strange paper "Weird web data foxes experts" about a unknown (they said) type of scan probes

Since May net security experts have caught data packets travelling across the net that have an abnormally large data window size of 55,808 bytes
ISS believes the packets are being formed by a scanning tool called "Stumbler". However, other security firms dispute this explanation.
However, some security experts believe that the badly formed packets are evidence of a new type of scanner that could slip past existing detection systems and be used to knock sites offline by swamping them with bogus data.
Despite this article had been written today, I can't figure out if its a simple fragment-based test or if its smth more serious.

Does any heard of smth similar....