In Simple way we can say that cyber crime is unlawful acts
wherein the computer is either a tool or a target or both
Cyber crimes can
involve criminal activities that are traditional in nature, such as theft,
fraud, forgery, defamation and mischief, all of which are subject to the
Indian Penal Code. The abuse of computers has also given birth to a gamut
of new age crimes that are addressed by the Information Technology Act,
We can categorize Cyber crimes in two ways
The Computer as a Target :-using a computer to attack other computers.
e.g. Hacking, Virus/Worm attacks, DOS attack etc.
The computer as a weapon :-using a computer to commit real
e.g. Cyber Terrorism, IPR violations, Credit card frauds, EFT
frauds, Pornography etc.
Cyber Crime regulated by Cyber Laws or Internet Laws.
Technological advancements have created new possibilities for criminal
activity, in particular the criminal misuse of information technologies
a. Unauthorized access & Hacking:-
Access means gaining entry into, instructing or communicating
with the logical, arithmetical, or memory function resources of a computer,
computer system or computer network.
Unauthorized access would therefore mean any kind of access
without the permission of either the rightful owner or the person in charge
of a computer, computer system or computer network.
Every act committed towards breaking into a computer and/or
network is hacking. Hackers write or use ready-made computer programs to
attack the target computer. They possess the desire to destruct and they
get the kick out of such destruction. Some hackers hack for personal
monetary gains, such as to stealing the credit card information,
transferring money from various bank accounts to their own account followed
by withdrawal of money.
By hacking web server taking control on another persons
website called as web hijacking
b. Trojan Attack:-
The program that act like something useful but do the things
that are quiet damping. The programs of this kind are called as Trojans.
The name Trojan Horse is popular.
Trojans come in two parts, a Client part and a Server part.
When the victim (unknowingly) runs the server on its machine, the attacker
will then use the Client to connect to the Server and start using the
TCP/IP protocol is the usual protocol type used for communications,
but some functions of the trojans use the UDP protocol as well.
c. Virus and Worm attack:-
A program that has capability to infect other programs and
make copies of itself and spread into other programs is called virus.
Programs that multiply like viruses but spread from computer
to computer are called as worms.
d. E-mail & IRC related crimes:-
1. Email spoofing
Email spoofing refers to email that appears to have been
originated from one source when it was actually sent from another source.
2. Email Spamming
Email "spamming" refers to sending email to
thousands and thousands of users - similar to a chain letter.
3 Sending malicious codes through email
E-mails are used to send viruses, Trojans etc through emails
as an attachment or by sending a link of website which on visiting
downloads malicious code.
4. Email bombing
E-mail "bombing" is characterized by abusers
repeatedly sending an identical email message to a particular address.
5. Sending threatening emails
6. Defamatory emails
7. Email frauds
8. IRC related
Three main ways to attack IRC are: "verbalâ⦣8218;?Ŧ#8220;
attacks, clone attacks, and flood attacks.
e. Denial of Service attacks:-
Flooding a computer resource with more requests than it can
handle. This causes the resource to crash thereby denying access of service
to authorized users.
attempts to "flood" a network, thereby preventing
legitimate network traffic
attempts to disrupt connections between two machines, thereby
preventing access to a service
attempts to prevent a particular individual from accessing a
attempts to disrupt service to a specific system or person.
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