It was a confusing day in the Twittersphere, as users were met with a spotty site service outage this morning. The service went down and up multiple times, in a two-hour period beginning around 2am AEST.
Twitter said that the outage's cause wasn't an attack, but a failure within Twitter's system.
"Today's outage is due to a cascaded bug in one of our infrastructure components," the company's communications folks tweeted. "We'll provide updated information soon."
Now, hacker group UGNazi has said that it's actively attacking the site, CBS Atlanta reported.
Hacker Hannah Sweet, known as "Cosmo" and @CosmoTheGod on Twitter, is claiming that UGNazi took Twitter down for 40 minutes worldwide, with a "distributed denial of service" attack, with the hackers continuing the attack.
Sweet said that the group attacked Twitter because of the site's support of Cyber Intelligence Sharing and Protection Act (CISPA), a bill that will allow the federal government and private businesses to share information about possible cyber threats.
After Twitter said its service was back up mid-morning, after more than an hour of service interruption, the site went down again.
"Update: The issue is on-going and engineers are working to resolve it," the status read at 3.57am AEST, as the site's service continued to yo-yo.
Twitter appeared to be completely down from 2am AEST, according to monitoring site Pingdom. According to the stats on Pingdom, this looks to be Twitter's worst crash in months.