Fingerprinting schemes embed a fingerprinting sequence in a
digital object to construct an individualized version for each buyer.
A c-secure fingerprinting system can be used to identify at least
one of the colluders if a pirate object is constructed by a collusion
of up to c colluders. A ‘marking assumption’ determines possible
pirate objects (fingerprints) that the colluders can construct. We review
existing marking assumptions and their corresponding fingerprint codes,
and propose an extension that reflects the attack where the colluders
remove part of the object.

The facilitator of this program is Reihaneh Safavi-Naini of the University of Wollongong.