The LockBit ransomware gang has claimed responsibility for the cyberattack on ION Group, a UK-based software company whose products are used by financial institutions, banks, and corporations for trading, investment management, and market analytics. 42 clients have been impacted by the attack on the provider, whose software plays a key role in derivatives trading around the world. It has been linked to the prolific Lockbit group which recently caused major disruption to the Royal Mail.