Some 324,000 records containing names, physical addresses, email addresses, IP addresses, phone numbers, CVV codes and the credit cards’ last four digits were allegedly leaked via Twitter, Australian security researcher Troy Hunt found.
This information is extremely useful for hackers because it can be easily exploited for fraud and other cybercrimes.
“Now it’s possible that the data has come from another unnamed party, but it’s highly unlikely,” Hunt said. ”Not only could I not pick a pattern in the data suggesting it was sourced from elsewhere, but the CVVs just shouldn’t have been there.”
The data could have been from either BlueSnap or Regpack, he had initially written. BlueSnap is a global payment processing customer, while Regpack deals with solutions for online event registrations and has been a BlueSnap customer since April 2013.
“We’ve got 899 totally separate consumers of the Regpack service (so it’s not from one of them) who send their data direct to Regpack who pass payment data onto BlueSnap for processing. Unless I’m missing a fundamental piece of the workflow (and I’m certainly open to suggestions on what this might be), it looks like accountability almost certainly lies with one of these two parties.”
In the meantime, however, BlueSnap has denied the hack in a statement to SecurityWeek.
“Based on an investigation we initiated as soon as we heard about the data set, we hired a top PCI-certified Incident Response firm. They confirmed that BlueSnap did not experience a system breach or any data loss.”