Warning sent to billions of Gmail users

• Google has warned Gmail users that a notorious hacker group is targeting accounts after gaining access to a massive database.
• The attacks stem from a breach of Salesforce’s cloud platform, which exposed users of Google services to further intrusions.
• Google’s Threat Intelligence Group first warned of the attacks in June, revealing that threat actors were targeting people through social engineering attacks that involved impersonating IT support staff.
• Google's Threat Intelligence Group also believes the group may be preparing to escalate their extortion tactics by launching a data leak site.
• The method of impersonating IT support personnel via telephone calls has proven “particularly effective in tricking employees”, according to Google.

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Google issues warning to billions of Gmail users over password hack