5. Security Programs or Firewalls Have Been Uninstalled
One way to get around your organization’s firewalls security is to uninstall it, which is another way to determine that you’ve been hacked. Once uninstalled, it becomes simple for that entity to access your network and do whatever they want.
6. Change to Default Browser Home Page
When the default browser has been changed, web pages being redirected, or a new toolbar has been unknowingly added to a browser, then you need to confirm whether or not you have been hacked.
7. Computer Functioning on its Own
When employees don’t seem to be able to control their mouse or when the computer seems to be functioning on its own, then that is a definite sign that someone has been able to access that computer remotely, possibly trying to look at documents, install new software, or read email. The entire computer, including its data, is no longer secure.
With every tactic intended to prevent network and firewall hacking comes a new method that can circumvent it. While not all hacking attempts are meant to destroy information, they can still disrupt productivity, and at the very least, indicate that your network is not as secure as it could be.