1. What are typical phases of operation of a virus or worm? 2. Explain the step

1. What are typical phases of operation of a virus or worm?
2. Explain the steps to create a Backdoor Login Account.
3. Explain a few ways to identify a logic bomb on a computer.
4. Differentiate among the following: a backdoor, a bot, a keylogger, spyware, and a rootkit? Can they all be present in the same malware?
5. What type of malware is the following code fragment?
legitimate code
if data is Friday the 13th
crash_computer();
legitimate code
6. Consider the following fragment in an authentication program and determine what type of malicious software this is.
username = read_username();
password = read_password();
if username is “133t h4ck0r”
return ALLOW_LOGIN;
if username and password are valid
return ALLOW_LOGIN;
else return DENY_LOGIN