With the advancement of information technology and social media, various forms of cybercrime have emerged, including defamation. This study aims to evaluate the legal regulations and criminal liability of individuals who commit defamation on social media, in accordance with the Law on Information and Electronic Transactions. A normative-juridical method was employed, utilizing both statutory and conceptual approaches through a literature review. The findings confirm that defamation via social media is governed by Article 27A in conjunction with Article 45, paragraph (4), of Law Number 1 of 2024. Criminal liability may be imposed provided that the elements of a criminal offense, culpability, and the capacity to be held accountable are met, and in the absence of any grounds for justification or exculpation. Law enforcement continues to face challenges regarding the use of electronic evidence, as well as the need to strike a balance between protecting one’s reputation and upholding freedom of expression.
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