Facebook followed in Google's footsteps and began warning users when it appears they are targeted by state-sponsored cyber attacks.
Instagram has rocketed past the 400-million-user mark, with more than 80 million pictures shared daily at the Facebook-owned service.
Facebook said it has stepped up its battle against spammers who promise to deliver "likes" to its members, and warned users on using such scams.
Facebook has hit more than 100 million users in India, making it only the second country after the United States to achieve the milestone, the social network company has said.
Yahoo Japan Corp. has said it suspects up to 22 million user IDs may have been stolen during an unauthorised attempt to access the administrative system of its Yahoo! Japan portal.
The number of users of Kazakhstan’s Internet segment has reached 6.5 million people.
The list of the most insecure computer passwords of e-mails and social networks' accounts has been published recently.
Kazakhstan Minister of Information and Communications said that density of Internet users reached 41.1 percent in September 2011.
The number of Kazakhstan Internet users reached 34.4 percent of the total country population in Q1 2011.