Feb 1 (Reuters) - The Futures Industry Association said on Wednesday it was assessing the impact of a cyber attack on the systems of an ION Group unit, which is affecting trading and clearing of exchange-traded derivatives by ION customers across global markets.

The FIA, an industry group that represents futures dealers, investors and exchanges, said it was working with impacted members as well as market regulators to evaluate the extent of the impact on trading, processing and clearing.

Dublin-based financial technology company ION Markets said a "cybersecurity event" had impacted its Cleared Derivatives division on Tuesday. All affected servers were disconnected and being remedied, according to the firm. (Reporting by Medha Singh in Bengaluru; Editing by Krishna Chandra Eluri)