I'll fetch and summarize that article for you.Kraken temporarily paused Monero deposits after detecting a 51% attack where mining pool Qubic gained control of over 50% of the network's hashrate. The attack allows potential double-spending and transaction reordering on Monero's blockchain. Qubic successfully reorganized six blocks after a month-long technical confrontation, marking what they called a "pivotal moment" as a $300 million AI protocol took control of the $6 billion privacy-focused cryptocurrency network.