The Internet Archive is back online in a read-only state after a cyberattack brought down the digital library and Wayback Machine last week. A data breach and DDoS attack kicked the site offline on October 9th, with a user authentication database containing 31 million unique records also stolen in recent weeks.

The Internet Archive is now back online in a “provisional, read-only manner,” according to founder Brewster Kahle. “Safe to resume but might need further maintenance, in which case it will be suspended again.”

While you can access the Wayback Machine to search 916 billion web pages that have been archived over time, you can’t currently capture an existing web page into the archive. Kahle and team have gradually been restoring Archive.org services in recent days, including bringing back the team’s email accounts and its crawlers for National Libraries. Services have been offline so that Internet Archive staff can examine and strengthen them against future attacks.

A pop-up from a purported hacker claimed the archive had suffered a “catastrophic security breach” last week, before Have I Been Pwned confirmed data was stolen. The theft included email addresses, screen names, hashed passwords, and other internal data for 31 million unique email accounts.

The Internet Archive outage came just weeks after Google started adding links to archived websites in the Wayback Machine. Google removed its own cached pages links earlier this year, so having the Wayback Machine linked in Google search results is a useful way to access older versions of websites or archived pages.