Citigroup said today that a cyber attack in May affected almost twice as many accounts as the bank’s figures had initially suggested. A total of 360,083 North American Citigroup credit card accounts were affected by the breach, the third-largest U.S. bank by assets.

Citigroup chatter

Chatter around Citigroup is currently at its highest point of the year.

Citigroup sentiment

Chatter around Citi or Citigroup is currently 34% negative, and the word hacker is appearing in more than 14% of conversations.

Citigroup is the latest in a growing list of companies to face cyber attacks in recent months, with Sony, Google Inc and Lockheed Martin all having suffered under hackers this year. Hacker group LulzSec, which recently claimed responsibility for high-profile attacks against Sony and Nintendo, says it successfully attacked the U.S. Senate’s website over the weekend.

As everything on the internet becomes social, is it only inevitable that all of your personal information and private life matters will become available as a public offering? Would you give your 5,000 Twitter followers access to your checking account statements? There’s a new social network in town, in the form of a microblog, that is positioning their service as “A fun and easy way to see and discuss the things people are buying.” Blippy is stirring up some heated discussions on the internet and we used Social Radar to see what people are saying about this new social platform.

Blippy launched their private beta last week and got instant negative reactions as news spread through coverage from popular blogs TechCrunch and the NY Times.

With just over 30% of all related posts emitting negative emotion people don’t seem to think that Blippy is a very good basis for a microblog.

As Blippy is still only in beta, it will be interesting to see what happens as more and more people gain access to the tool. Have any of you tried it yet? What do you think of Blippy? Let us know!