A server-wide hack flooded Rainbow Six Siege with billions in credits, forcing an emergency shutdown and a major rollback operation. French video gaming giant Ubisoft has been forced to halt the live services of Rainbow Six Siege after hackers breached the game and dished out 2 billion in-game credits to every player. The exploit was initially confirmed by the team via X on Dec. 27, with a series of updates following, ultimately leading to a suspension of the game’s servers and marketplace the following day. Reports from players on social media indicate that hackers were able to take control of the major parts of the game’s online systems, with players reporting that everyone was receiving 2 billion in-game R6 credits upon logging in, alongside rare items such as skins and guns. Read more
The Flow Foundation has been slammed for rolling the layer 1 Flow chain back to patch up a $3.9 million exploit, with one partner advising validators to stop processing transactions until further notice. deBridge founder Alex Smirnov has urged validators on the Flow blockchain to stop processing transactions until the Flow Foundation devises a remediation plan for users impacted by its controversial rollback of the chain. The rollback was in response to the theft of $3.9 million on Dec. 27 when an attacker exploited a flaw in Flow’s execution layer and siphoned funds off the chain via multiple cross-chain bridges. deBridge is one of Flow’s main bridge providers and Smirnov called on Flow to clarify plans to address doubled balances for users who bridged out during the rollback window. Read more
Many crypto and Bitcoin treasury companies may go under in 2026 as the model comes under pressure, industry executives tell Cointelegraph. Digital asset treasury (DAT) companies face a grim future heading into 2026, with shares in many of the largest players sharply down, industry executives say. “Going into the next year, I think that the outlook for DATs is looking a bit bleak,” Altan Tutar, co-founder and CEO of crypto yield platform MoreMarkets, told Cointelegraph. Large numbers of crypto treasury companies emerged in 2025 to give Wall Street investors another avenue to access cryptocurrencies. The share prices of many initially shot up as heavyweight investors poured in billions as Bitcoin (BTC) rose to a peak in October, but a broad crypto market decline has since hurt their valuations. Read more