About 20 percent of Microsoft Account logins are found on lists of compromised credentials in the wake of hack attacks on other service providers, the company has said.
People re-use passwords and login details across services from different providers, Microsoft Account group manager Eric Doerr
noted in a blog post on Sunday. That reuse means that if one set of logins is compromised, other accounts are at risk.
"These attacks shine a spotlight on the core issue — people reuse passwords between different websites," said Doer, speaking after the
Yahoo breach last week that exposed 400,000 user details. "On average, we see successful password matches of around 20 percent of matching usernames."
