And it may depend on what a reasonable person would expect from the delete service. Dalia Topelson Ritvo, the assistant director of Harvard Law School’s cyberlaw clinic, says the legal question boils down to whether Ashley Madison did what it promised. But what that promise really is promising may be difficult to parse these days. “‘What does it mean to delete?’,” she says. “It’s a really interesting question, especially in the age of big data.”

Source: Ashley Madison Hack Exposes (Wait for It) a Lousy Business | WIRED