LinkedIn is battling a DNS issue that took the business social networking site offline for an hour Wednesday night.
The outage, which appears to be over for most of LinkedIn's members, began when the site's homepage was replaced by a domain sales page. The site's operators explained via Twitter that the outage was caused by a "DNS issue" but did not elaborate.
Meanwhile, App.net co-founder Bryan Berg claimed that LinkedIn's DNS was "hijacked," and that all its traffic was sent to a network hosted by Confluence Networks.
"They don't require SSL, so if you tried to visit, your browser sent your long-lived session cookies in plaintext," he wrote.
CNET has contacted Confluence Networks for comment and will update this report when we learn more.