Utilize two-factor authentication
Make sure employees and all corporate accounts utilize two-factor authentication, which requires a password, username and something unique that only the user will recognize or know. Many of the larger social networks provide two-factor authentication, commonly in the form of a code sent to their smartphone or email each time a new device or browser attempts to login to the account.
This ensures that an employee’s identity is legitimate to permit access to the desired account. Having this as a second layer of protection makes attackers’ lives harder and reduces the vulnerability of attack.