For many of us, a Gmail password is not just a Gmail password. It's a passport to our Google Docs account, our AdWords campaigns, our personal Google calendars, Google Docs, and more. That's not to mention access to Gmail itself, through which someone can find tax returns, private email conversations, and other data to pull off identity or credit card theft. If you are using Google business apps, you risk damage to your company if staff members' accounts are insecure.
Luckily, Google has a vested interest in keeping your information as secure as possible. Follow Google's own Security Checklist for concrete steps to put your Google Account on lockdown, and pay special attention to the advice below.
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