2017 was bananas in a lot of ways, and cybersecurity was no exception. Critical infrastructure attacks, insecure databases, hacks, breaches, and leaks of unprecedented scale impacted institutions around the world—along with the billions of people who trust them with their data.

This list includes incidents disclosed in 2017, but note that some took place earlier. (Speaking of which, you know it’s a heck of a year when Yahoo reveals that it leaked info for three billion accounts, and it’s still not a clear-cut winner for worst incident.) The pace has been unrelenting, but before we forge on, here’s WIRED’s look back at the biggest hacks in 2017.