The PSN and Qriosity services are still down, and someone out there is still gloating over all the personal and possible credit card information he made off with by successfully hacking Sony's online networks. PSN users aren't the only ones who fear they will be hit hard if the worst comes to pass; the PSN breach stands to cost Sony a very pretty penny in the long run.
The Ponemon Institute for example estimates that the average cost of data theft as a result of malicious/criminal acts amounted to approximately $318 USD per compromised record in 2010. Given that up to 77 million PSN records were compromised, the data security research firm believes the PSN breach could cost Sony up to a whopping $24 billion to clean up.
Because up to 77 million user accounts stand to be affected as a result, data research and security firms estimate the PSN security breach stands to be one of the worst cases of financial data theft assuming user credit card details were indeed compromised. Sony itself reassures that the hackers wouldn't have been able to get the 3-digit credit card security codes even if card numbers were stolen, and it isn't aware of any credit card fraud reports resulting from the PSN breach yet.