Network security is one of the most important parts of keeping your companys data safe. No network is completely invulnerable to hacking, malware, and other malicious intrusions. Changing all of your passwords is the next logical step to take because you dont want the same network breach to happen again. Two-factor authentication can also reduce the number of attempts by unauthorized users to access your network, as well as adding an additional layer of security.Monitor for fraud and identity theft to make sure you don’t become a victim of identity theft.”]
Source: http://www.globalhn.com/blog/3-important-steps-follow-network-breach/