Oren Hafif, an Israeli “white hat” hacker, discovered a serious security flaw in Gmail which could have compromised all 500 million accounts and allowed hackers to access users’ mail accounts and all Web services that use Google’s authentication system.

MultiMi, co-developed by AVG and Israeli start-up Zbang.it, is a new computer application that combines all your online platforms, such as e-mail, social networks and online documents, into a single place.