Google and UC Berkeley researchers looked at black market activity from March 2016 to March 2017 and its impact on exclusively Google accounts. Between 7 percent and 25 percent of exposed passwords matched a victim s Google account, Google said. Overall, Google estimates there are 1.9 billion usernames and passwords cultivated from breaches that are being traded on the black market for sale. Google said it has already used this data to reinforce the security of Gmail and other webmail services. Researchers: Phishing remains one of the most successful phenomena in security, despite more than a decade of education.
Source: https://threatpost.com/phishing-biggest-threat-to-google-account-security/128859/