Question

Please list and describe four types of Cyber crime.

Answer 1

Well there are more than 4 types of cyber crime but as you mentioned 4 types i would like to discuss 4 types.

1)Denial Of Service attack

• This crime is popularly known as DOS attack
• Denial of service attack is a type of attack that causes legitimate users unable to use services or the resource,or services become unavailable to the legitimate users.
• In this attack,the attacker keeps on sending or makes the network or bandwidth overflow by emails or spam mail by depriving the victim to access services.
• Buffer overflow technique is used to make denial of service attack.What an attacker does is it takes packet,divide into small chunks,the attacker checks for the IP address of the particular network in that packet and floods the network of victim with repeated request.As IP is a fake,from attacker's machine.

2)Salami attack

• It is series of small attacks which results in large attack.
• It works on "collect and round off " trick
• It is a fruadulent practice of stealing money repeatedly.It takes advantage of rounding operation in financial transactions.
• It always rounds down and thus the fractions of amount remained will be transferred into some another account.
• Thus the transaction will go undetected.Such type of attacks can be easily automated.

3)Phishing

• Phishing is a technique of stealing confidential and sensitive information such as password or username,credit card/debit card numbers by pretending to be a legitimate entity.
• It is mostly carried by email spoofing.
• In phishing.the attackers/fraudsters build some fake sites/links which is sent to numerous mail id's along with fake links.Users click on link considering it to be legitimate and enter their personal information.By this the attackers can have access to the sensitive data and can sell them online as well.

4)Cross Site Scripting

• Cross Site Scripting(XSS) attacks are a type of injection in which malicious scripts are injected into otherwise benign and trusted websites.
• XSS attacks occur when an attacker uses a web application to send malicious code,generally in the form of a browser side script to a different end user.
• An attacker can use XSS to send a malicious script to an unsuspecting user.The end user's browser has no way to know that the script should not be trusted,and will execute the script.