Kraken, a leading cryptocurrency exchange, has successfully recovered nearly $3 million in digital assets that went missing due to a bug exploit. The saga began on June 9 when a "security researcher" reportedly discovered a bug and withdrew the funds. The researcher, later identified as blockchain security firm CertiK, claimed it was testing Kraken's risk controls. Kraken initially accused CertiK of extortion, but the funds have now been returned, minus transaction fees. The exchange's Chief Security Officer, Nicholas Percoco, confirmed the recovery on June 20.