Twitter, the popular microblogging service, experienced technical difficulties Thursday that kept users from posting or accessing the site.
The San Francisco company began experiencing outages in its service around 9 a.m. Pacific time Thursday morning and posted a message on its Status blog around 9:30 a.m. that read: "Users may be experiencing issues accessing Twitter. Our engineers are currently working to resolve the issue."
Service was spotty throughout the morning; around 10:45 a.m., an update on the company's blog posting said, "The issue has been resolved and all services are currently operational," but that message was changed just minutes later to say, "The issue is on-going and engineers are working to resolve it," as users again faced issues accessing the site.
"It's annoying. It's down a lot, but today is the worst it's been," Anna Lee said, commenting on a Mercury News Facebook post about the outage.
A group of hackers called UGNazi, also known as the Underground Nazi Hacktivist Group, claimed responsibility for the outage, saying it had performed a distributed denial-of-service, or DDoS, attack, but a Twitter spokesman denied that claim. He pointed to a tweet posted at 12:17 p.m. Pacific time by the Twitter communications team that read "Today's outage is due to a cascaded bug in one of our infrastructure
Contact Jeremy C. Owens at 408-920-5876; follow him at Twitter.com/mercbizbreak.