Nerval's Lobster writes: Retail giant Target continues to drastically downplay the impact of the massive data breach it suffered during December, even while admitting the number of customers affected is nearly twice as large as it had previously estimated. Target admitted today the massive data breach it suffered during the Christmas shopping season was more than twice as large and far more serious than previously disclosed. A Jan. 10 press release admits the number of customers affected by the second-largest corporate data breach in history had increased from 40 million to 70 million, and that the data stolen included emails, phone numbers, street addresses and other information absent from the stolen transactional data that netted thieves 40 million debit- and credit-card numbers and PINs. “As part of Target’s ongoing forensic investigation, it has been determined that certain guest information — separate from the payment card data previously disclosed — was taken during the data breach” according to Target’s statement. “This theft is not a new breach, but was uncovered as part of the ongoing investigation.” The new revalation does represent a new breach, however, or at least the breach of an unrelated system during the period covered during the same attack, according to the few details Target has released. Most analysts and news outlets have blamed the breach on either the security of Target’s Windows-based Point-of-Sale systems or the company’s failure to fulfill its security obligations under the Payment Card Industry Data Security Standard (PCI DSS).