I just heard about this on Doodie Project, and it’s been making the rounds on the competition shooting circles today.
Basically, the way I understand it, is that USPSA was not storing account names and passwords in a encrypted format, so when their website was hacked the hackers were able to access email addresses and account passwords for USPSA website accounts.
If you use unique passwords for every different website this probably isn’t a big deal, but if you use the same email address and password from your USPSA account as any other website out there, go change your password immediately.
Rumor is that the hackers have already tried the username/password combinations on PayPal and other financial based sites.