Software developer says Virgin Mobile USA forces customers to use weak passwords on its website. Kevin Burke claims he wrote a program which can determine the PIN number for any Virgin Mobile account in less than a day. An attacker can read the account owner’s call and SMS logs and change the handset associated with the account, change the email address and the mailing address, he says. Burke claims that he notified the company and its parent company, Sprint Nextel, of the security issue on August 15 and he was initially told that the matter will be looked into. However, a Sprint representative said no further action will be taken by Virgin Mobile.”]