國際唱片交流基金會（IFPI）公布的音樂市場報告指出，2008年違法下載的音樂檔案約有400億個，盜版率高達95%，先前我國在ezPeer及Kuro兩案後，對網路業者展開法律追訴行動，因應近年來美國聯邦最高法院，於美國唱片工業協會（RIAA）與Grokster案中所做的判決結果，在在顯示各國規範著作權侵害及間接侵害責任立法的必要性。我國甫於2009年4月21日立法院三讀通過修正「著作權法」，主要針對網路服務提供者，因使用者利用其所提供之服務侵害他人著作權或製版權，得主張不負責任之範圍及要件，亦研究美國對網路終端使用者規範的權利、義務及責任，探討終端使用者使用網路分享資訊須承擔之法律責任，再佐以實務案例對第二順位侵權責任的實務見解與理論依據，統整目前美國著作權侵害責任之分類與歷史過程，並悉論目前適用及運用情形。包括參考美國著作權法實務，如替代侵害責任、輔助侵害責任與引誘侵害責任，並輔以說明我國現況，最後檢視我國著作權法相關規定，統整後提出建議暨結論。希冀本文對網路著作權侵害責任之分析，能為我國在相關案件之處理，提供適用法律之依據，以供參考。

Digital Music Report 2009 from the International Federation of the Phonographic Industry (IFPI) shows, in 2008, the digital music business internationally grew by an estimated 25 per cent to US$3.7 billion in trade value. In 2005, the ezPeer and Kuro cases of internet copyright infringement of MP3 downloading in the ROC. District Courts got the different results. The United States Supreme Court also issued its decision in case of the Recording Industry Association of America with Grokster. All the facts attempted to answer that question and to settle the doctrinal confusion of contributory copyright liability.ROC improves its IPR regime by amended the Copyright Law by the Legislative Yuan in April 21, 2009, trying to solve the problems of ending illegal file-sharing over peer-to-peer (P2P) platforms, to discuss the issues of copyright secondary liability and digital technology appearing to pose a threat to copyright holders. Learning the experiences and history from the States, including the duty and responsibility of end users, because digital technology eases the reproduction of copyright and facilitates the global distribution of infringing products.This article will discuss the theories of secondary liability, it examines the current law of vicarious, contributory, inducement liability. Secondly, this article is going to introduce the U.S. cases and judicial decisions. Thirdly, it tries to reveal ROC Copyright Law in related to copyright secondary liability. Finally, the analysis is assessing how the law of secondary liability fails to lay a reasonable template for resolving complex issues of technological change.