Environmental law is a relatively new but rapidly developing field of law in Indonesia. The development of environmental law in the country has been to a larger extent contributed by environmental activists employing legal institutions, especially the court, for advancing progressive legal rules and procedures for protecting the environment. Ironically, in the post-authoritarian Indonesia, those activists have faced threats for being subject to criminal charges and civil lawsuits for exposing environmental destruction and advocating environmental rights. Several cases that may be considered as strategic litigation against public participation (SLAPP) have been heard before the court through which those activists were sent to prison. More recently, this threat is not only targeting environmental activists but expert witnesses have also been sued for their statements before the court against the interests of corporations and government officials involved in environmental crimes. Based on this background, this paper aims at examining the current phenomena of SLAPP in Indonesia by demonstrating the conceptual flaws of the anti-SLAPP legislation in the country. I argue that the encounter between environmental activism and the law in the post-authoritarian Indonesian remains problematic where the court instead of exercising judicial activism has appeared to be the fortress for the corporation.