Riot Platforms, a cryptocurrency mining firm, has hit a snag in its plans to acquire Bitfarms. Riot's CEO, Jason Les, opposes Bitfarms' recent 'poison pill' strategy, which aims to prevent Riot from acquiring more than a 15% stake in the company. Riot currently holds a 13.1% stake, having purchased six million common shares of Bitfarms in three separate trades. Les argues that the Bitfarms plan conflicts with established legal and governance standards by lowering the threshold to 15% instead of the usual 20%. Riot had offered to acquire Bitfarms for $950 million in May.