# Virus Attacks and How to Defend

What is heuristic scanning?

> Scanning using a rules-based approach

What malicious activity did the Rombertik virus attempt?

> It overwrote the master boot record

Which of the following should be the least important consideration when purchasing antivirus software?

> Cost

The first known ransomware was the 1995 PC Trojan

> False

In the event of a virus infection, the first priority is to contact the IT department.

> False, the first priority is to stop the spread of the infection

What is the most common method of virus propagation?

> Through e-mail attachments

In the context of viruses what is a .dat file?

> A file with virus definitions

The unfortunate side effect of heuristic scanning is that it can easily lead to false positives

> True

What is active code scanning?

> Scanning for active web elements (scripts, ActiveX, and so on)

Which of the below are famous Trojan Horses?

> Netbus, Finfisher