Industrial security intelligence provider Dragos has issued a warning about a threat group it has baptised Xenotime, which it says has expanded its field of operations from the oil and gas industry to now also target electricity utilities in the US.

Security company FireEye says it has been responding to a second attack by the group behind the Triton malware which was used to attack the Saudi Arabian oil company Saudi Aramco last year.

Countries in the Persian Gulf came in for increased attention from cyber criminals last year, with the security firm Group-IB finding that 138,978 credit cards issued by banks in the region were compromised.