Valve has informed users of its Steam online game distribution platform that hackers have probably downloaded encrypted credit card transaction data from a backup database during an intrusion last year.

In November 2011, Valve announced that hackers gained unauthorized access to Steam’s user database, but said that there was no evidence to suggest a leak of encrypted credit card details at that time.

However, that has since changed. “Recently we learned that it is probable that the intruders obtained a copy of a backup file with information about Steam transactions between 2004 and 2008,” said Gabe Newell, Valve’s co-founder and managing director, in an email sent Friday to Steam users.

Now, I'm not a master hacker, but something occurs to me.
Aren't most cards replaced after 4 years?
In which case, won't most of those card details will be obsolete?

Now, I'm not a master hacker, but something occurs to me.
Aren't most cards replaced after 4 years?
In which case, won't most of those card details will be obsolete?