Jayachandran
American Express says it closes the web page, which left some of its Web site open to access what is called a zero-day vulnerability, the company said in a statement. The security problem was discovered by the developer Niklas FemerStrand, who tried to reach out to American Express via Twitter, hoping to be reported to an e-mail, it could be used to send additional information on the question.
Apparent confusion Twitter representative asked if he was the owner of an American Express card and offered a phone number to call, despite his objections Amex contacted by phone, fax or physical mail. In his frustration, instead details of his blog was published by Femerstrand.
