News of the DDoS attack (which stands for “Distributed Denial of Service”) broke on October 9, when users attempting to access the Wayback Machine were met with a JavaScript alert that read: “Have you ever felt like the Internet Archive runs on sticks and is constantly on the verge of suffering a catastrophic security breach?

The Internet Archive’s Wayback Machine is back online following a devastating distributed denial of service attack which knocked out its services last week and coincided with the theft of emails and encrypted passwords of 31 million users.

Hackers have seemingly done the impossible and hacked the past. In this case, that past is the Internet Archive’s Wayback Machine. Here’s what we know so far.