More than 16 billion passwords have been leaked online in what researchers are calling the largest amount of breached data in history. This massive exposure, highlighted by the “Cybernews” platform, is raising growing concerns about the security of digital accounts for millions of users worldwide.

The original source of the report, Cybernews, says that since the start of the year, its researchers have “discovered 30 exposed datasets containing from tens of millions to over 3.5 billion records each.

Wondering if your information is posted online from a data breach? Here's how to check if your accounts are at risk and what to do next.