Acomputer on a company network was infected with a zero-day exploit after an employee accidently opened an email that contained malicious content. the employee recognized the email as malicious and was attempting to delete it, but accidently opened it. which of the following should be done to prevent this scenario from occurring again in the future? a. install host-based firewalls on all computers that have an email client installed b. set the email program default to open messages in plain text c. install end-point protection on all computers that access web email d. create new email spam filters to delete all messages from that sender

A. Install host-based firewalls on all computers that have an email client installed

Explanation:

Since the employee accidentally opened the email that contained malicious content and the computer on the company network got infected, it needs to install host-based firewalls on all computers that have an email client installed on the system. A host-based firewall is a type of firewall installed on individual client or server which controls the incoming and outgoing networking data and identifies whether to allow it or not. The host-based firewall can easily identify and block suspected exploits like viruses, worms or trojan horses.

By installing host-based firewalls on all computers that have an email client installed secures the entire network of computers.

The answer is C.

Explanation:

To prevent such thing from happening in the future, the employee/company should Install end-point protection on all computers that access web email