>However, working on the basis that there are more than 3 billion Chrome web browser users, with Windows users counting for the vast majority of these, it’s possible to come up with an estimated number. Google said that 25% of the user base saw the configuration change rolled out, which, by my calculations, is around 750 million. Of these, around 2%, according to Google’s estimation, were hit by the password manager issue. That means around 15 million users have seen their passwords vanish into thin air.<p>That is highly likely to be a wrong Estimate. The total Chrome number includes Android. In terms of PC it is ~1B outside of China. ( Not even Microsoft has a concrete answer ).<p>So we are looking at 5M.