There are many incidents of Gmail hacking. Gmail is the main target of most hackers because there are million users of Gmail and many uses Gmail account for personal and financial transactions. To avoid getting hacked your Gmail account then Turn on your Gmail 2-step verification.
How to enable 2-step Verification on Gmail Account
1. Login to your Gmail account.
2. Click the Settings link.
3. Select the Accounts and Import tab.
4. In the Change account settings section, click Other Google Account settings
5. In the Google accounts page, in the Security section, click Using 2-step verification.