The potential cost of a data breach is painfully clear to retailer Target, which was the victim of a cyber attack in 2013 with at least 40 million customers’ accounts compromised. The firm has announced a settlement plan which involves a fund of $10 million being set aside for those whose data was breached. Claimants who can prove that they have suffered actual harm from the breach will be eligible to up to $10,000. The settlement will go before a Minnesota judge today.