A newly discovered trove of stolen login credentials may represent the largest data breach in history, with billions of usernames and passwords now circulating online. Researchers with Cybernews uncovered more than 16 billion records spread across 30 databases,

Sensitive information including logins to social media accounts was among the data exposed in what some believe is the largest breach in U.S. history.

News of a major data breach of passwords for many companies, such as Google, Facebook, Apple and others has left customers concerned over what to do next.