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Which of the following types of attacks come under the category of hacker attacks?

Which of the following types of attacks come under the category of hacker attacks? Each correct answer represents a complete solution. Choose all that apply.

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A.
IP address spoofing

B.
Teardrop

C.
Password cracking

D.
Smurf

Explanation:
IP (Internet Protocol) address spoofing is an attack in which an attacker creates the IP packets with a forged (spoofed) source IP address with the purpose of concealing the identity of the sender or impersonating another computing system. The basic protocol for sending data over the Internet and many other computer networks is the Internet Protocol (“IP”). The header of each IP packet contains, among other things, the numerical source and destination address of the packet. The source address is normally the address that the packet was sent from. By forging the header so it contains a different address, an attacker can make it appear that the packet was sent by a different machine. The machine that receives spoofed packets will send response back to the forged source address, which means that this technique is mainly used when the attacker does not care about the response or the attacker has some way of guessing the response. Password cracking is the process of recovering passwords from data that has been stored in or transmitted by a computer system. A common approach is to repeatedly try guesses for the password. The purpose of password cracking might be to help a user recover a forgotten password (though installing an entirely new password is less of a security risk, but involves system administration privileges), to gain unauthorized access to a system, or as a preventive measure by system administrators to check for easily crackable passwords. On a file-by file basis, password cracking is utilized to gain access to digital evidence for which a judge has allowed access but the particular file’s access is restricted. Answer options D and B are incorrect. Smurf and Teardrop are types of attacks that come under the category of DoS attacks.

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