According to Reuters, Bitcoin mining company Bitfarms has approved the use of a poison pill plan to prevent potential hostile takeover attempts by Riot Platforms. Shareholder rights plans, also known as poison pills, are used by company boards to block hostile takeovers. Bitfarms said the entitlement plan would have to be approved by shareholders within six months of adoption or it would be terminated. Under Bitfarms' plan, if an entity accumulated more than 15 per cent of Bitfarms' shares between June 20 and September 10, the company would issue new shares, diluting the entity's stake.