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.

One of the key risks of a data breach this big is how easily cybercriminals will be able to access multiple accounts, especially for those who reuse passwords. A survey from NordPass indicates that as many as 62% of Americans, 60% of Brits and 50% of Germans admit to reusing passwords across multiple online accounts.

Sixteen billion passwords to Apple, Facebook, Google, and other social media accounts, as well as government services, were leaked in what researchers are calling the largest data breach ever, according to reports.