After security security experts said Starbucks' mobile payment app makes it easy for hackers to access customers' geological data and password information, the coffee chain updated its app with extra layers of protection with "additional performance enhancements and safeguards."
According to reports, the previous app version could allow them to make unauthorized purchases on the card.
In a statement sent to CNBC on Thursday MIlls said "we have released an updated version of Starbucks Mobile App for iOS which adds extra layers of protection."
This is an update to our original story. Here is an earlier version of the article before Starbucks updated the app:
Computerworld first reported the security hole Wednesday morning, citing security researcher Daniel Wood.