@inproceedings {268555,
	author = {Ruishan Zhang and Xinyuan Wang and Xiaohui Yang and Xuxian Jiang},
	title = {Billing Attacks on {SIP-Based} {VoIP} Systems},
	booktitle = {First USENIX Workshop on Offensive Technologies (WOOT 07)},
	year = {2007},
	address = {Boston, MA},
	url = {https://www.usenix.org/conference/woot-07/billing-attacks-sip-based-voip-systems},
	publisher = {USENIX Association},
	month = aug
}
