Hacker Tools Techniques Exploits and Incident Handling

Adam, a malicious hacker is running a scan. Statistics of the scan is as follows:
Scan directed at open port: ClientServer
192.5.2.92:4079 ---------FIN--------->192.5.2.110:23192.5.2.92:4079
<----NO RESPONSE------192.5.2.110:23
Scan directed at closed port:

Client Server -
192.5.2.92:4079 ---------FIN--------->192.5.2.110:23
192.5.2.92:4079<-----RST/ACK----------192.5.2.110:23
Which of the following types of port scan is Adam running?

Who are the primary victims of smurf attacks on the contemporary Internet system?

You have inserted a Trojan on your friend's computer and you want to put it in the startup so that whenever the computer reboots the Trojan will start to run on the startup. Which of the following registry entries will you edit to accomplish the task?

John, a part-time hacker, has accessed in unauthorized way to the www.yourbank.com banking Website and stolen the bank account information of its users and their credit card numbers by using the SQL injection attack. Now, John wants to sell this information to malicious person Mark and make a deal to get a good amount of money. Since, he does not want to send the hacked information in the clear text format to Mark; he decides to send information in hidden text. For this, he takes a steganography tool and hides the information in ASCII text by appending whitespace to the end of lines and encrypts the hidden information by using the IDEA encryption algorithm. Which of the following tools is John using for steganography?

Adam works as a Senior Programmer for Umbrella Inc. A project has been assigned to him to write a short program to gather user input for a Web application. He wants to keep his program neat and simple. His chooses to use printf(str) where he should have ideally used printf("%s", str). What attack will his program expose the Web application to?