A bitter billionaire divorce in New Jersey has escalated after the estranged wife, Laura Overdeck, was accused of hacking into her husband's emails after she rejected a proposed $633 million settlement. John Overdeck, a hedge fund billionaire, and his wife are engaged in a high-profile split in which allegations of digital intrusion have added a new, contentious dimension to what was already a dispute over an enormous divorce payout.

Details reported include Laura Overdeck's rejection of the $633 million offer as insufficient, followed by claims that she accessed her husband's private email correspondence without authorisation. The case highlights the scale of wealth involved and the increasingly acrimonious tactics being deployed as the couple contest the terms of their separation.