Question

Research email virus scanners and compare them to how host-based virus scanners work

Answer 1

As per your question, First I will explain what is the email virus next to the email virus scanners and further, I will compare the email virus scanner to host-based virus scanners in terms of working. So, please bear with me.

Email Virus: The email virus is nothing but malicious code that distributed or sent by the email messages in order to perform malicious activities by penetrating the security mechanisms of your system. These attached malicious codes can be activated by just opening the email or email attachment(s).

Thus, To reduce the risk of this email virus, the cybersecurity experts are introduced to the Email Virus Scanners. So, We can say that every desktop email user should have a trusted reliable antivirus software with extensive dedicated email scanning.

Email Virus Scanner: The Email Virus Scanner is just like a third party software tool which easily integrated into your email software for scanning your email attachments as well as link texts also.

Nowadays, some big market vendors are delivering email software along with their own custom email scanner, for example, Google mail has its own virus scanner.

Now coming to the host-based virus scanner, it is a virus scanner software that detects all of the possibilities of intrusion in a host by scanning all of the running processes as well as services, all stored files in HDD/SSD, and also monitoring the network packets on its network interfaces, a bit similar like the network-based intrusion detection system (NIDS) operates.

In general, the host-based virus scanner uses HIDS. that interacts with the database of the system object for which it is monitoring(in most cases file system objects). The HIDS is also capable to check and validate the appropriate regions of memory are modified or not - for example, the system call table for Unix-based operating system and multiple important vtable structures in Microsoft Windows.

I hope, now you have a brief overview about the Email Virus, Email Virus Scanner, and the host-based virus scanner.

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