It may protect you from viruses, malware, ransomware, data theft or loss due to hacking, and so on. For organisations, it might involve safeguarding against financial crimes such as staff embezzlement or consumers unlawfully accessing corporate account information, resulting in identity theft. In general, the downsides of cyber security manifest themselves in the following ways: Firewalls are difficult to configure properly. Incorrectly built firewalls may prevent users from engaging in specific Internet activities until the firewall is properly set. Slows the system down considerably more than previously.