https://www.cnet.com/news/usps-reportedly-fixes-website-bug-that-exposed-data-of-60m-users/ > USPS representatives didn't immediately respond to a request for confirmation and comment on Thanksgiving Day. > Krebs said the flaw stemmed from an authentication weakness in an application program interface, or API, tied to its Informed Visibility program, which lets users receive a scan of all incoming mail before it's delivered to their address. That program was the subject of a US Secret Service advisory Krebs tracked down earlier this month warning that criminals could use the program to target people for credit card fraud.