This research examines the legal protection of copyright for electronic books (E-books) under Law No. 28 of 2014 on Copyright (UUHC) and analyzes the legal accountability of the Shopee platform in handling the illegal sale of e-books. The study highlights the challenges in enforcing copyright laws in the digital era, particularly on e-commerce platforms where piracy remains rampant despite existing regulations. The study employs a mixed-method approach combining normative and empirical legal research, incorporating interviews with authors who experienced e-book piracy (Putia Pingki and Rohanah Lestari) and a Shopee employee (Monica Laurenthya) to assess the platform's policies and enforcement mechanisms. Additionally, the research analyzes secondary legal sources, including the UUHC, ITE Law, and Civil Code (KUHPerdata) to establish the legal framework governing digital copyright protection. Key findings reveal that E-books are legally protected under UUHC, which grants authors exclusive rights over reproduction, distribution, and publication of their works. However, enforcement mechanisms remain weak, allowing widespread piracy to persist. Shopee has implemented preventive measures such as seller education, manual product checks, and a Brand Portal for copyright complaints, yet illegal sellers often evade sanctions by simply creating new accounts. The platform's legal accountability arises under Article 1365 KUHPerdata (regarding unlawful acts) and Article 114 UUHC (concerning platform liability for facilitating copyright infringement), enabling authors to file civil lawsuits for damages or criminal reports against violators. The study recommends implementing stronger automated detection systems on e-commerce platforms to prevent ilegal e-book sales, establishing stricter seller verification processes and harsher penalties for repeat offenders, encouraging government intervention to enhance UUHC enforcement and public awareness of copyright laws, and promoting proactive legal protection by authors through copyright registration and legal action against infringers. This research contributes to intellectual property law by evaluating the gaps in digital copyright protection and proposing solutions to strengthen legal frameworks and platform accountability in Indonesia.