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Overlay multicast networks are used by service providers to distribute contents such as web pages, streaming multimedia data, or security updates to a large number of users. However, such networks are extremely vulnerable to message dropping attacks by malicious or selfish nodes that intentionally drop packets they are required to forward. It is difficult to detect such attacks both efficiently and effectively, not mentioning to further identify the attackers, especially when members in thedoi:10.1145/1341731.1341736 fatcat:7sgqeptnuvcqtbp2qvj5bwlmiy