Pichai took over Android business from that group's founder, Andy Rubin, managing the market leading smartphone operating system globally
It is not yet known if any other service by the Internet giant such as Google Drive or YouTube was affected by the disruption
In 2017, Google had said its computers will soon stop reading the emails of its Gmail users to personalise their ads
With the Gmail redesign, scammers could send out fake versions of confidential email alerts and trick a user into entering sensitive details
According to Google engineers, compromised passwords are the top way hackers gain access to accounts