This post was originally published on this siteOn Monday, a former Amazon employee was arrested and charged with stealing more than 100 million consumer applications for credit from Capital One. Since then, many have speculated the breach was perhaps the result of a previously unknown “zero-day” flaw, or an “insider” attack in which the accused took advantage of access surreptitiously obtained from her former employer. But new information indicates the methods she deployed have been well understood for years. What follows is based on interviews with almost a dozen security experts, including one who is privy to details about the ongoing breach investigation. […]