Sony faces a legal battle after one of its insurers, viz. Zurich American Insurance, has asked a US Court to that it is not liable to pay for legal claims made in the wake of the massive PlayStation Network hack.

The Japanese electronics & entertainment giant Sony discovered that its PlayStation Network had hacked into its systems and accessed confidential information on more than 77 million accounts.

Since then, US customers have launched around 55 lawsuits against Sony, while Canadian customers have hit the Japanese firm with three class action lawsuits.

The firm later announced that it would compensate customers and pay anyone who lost-out financially as a result of the hack.

But, Zurich American Insurance asked a New York court to rule that it should not be held for compensating Sony for massive attacks on its PlayStation Network.

Attorney Richard Bortnick, the publisher of the digital law blog CyberInquirer, said, "Zurich doesn't think there's coverage, but to the extent there may be a duty to defend it wants to make sure all of the insurers with a potential duty to defend are contributing.”

Earlier in May, Sony said that it wanted its insurers to help in compensating its affected customers and defending against lawsuits.