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Computer crime, or Cybercrime, refers to any crime that involves a computer and a network, where the computers may or may not have played an instrumental part in the commission of a crime. The term computer system security means the collective processes and mechanisms by which sensitive and valuable information and services are protected from publication, tampering or collapse by unauthorized activities or untrustworthy individuals and unplanned events respectively.
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CYBER CRIME & SECURITYCYBER CRIME & SECURITY
Presented By:SUNNY KUMAR ADITYA12080088
Seminar Guide:Mr. SUDEEP ELAYIDOM
“Your computer is the crime scene”
OutlineOutline
HISTORY
DEFINITION
CLASSIFICATION
DETECTION
PREVENTION
HISTORYHISTORY
The first recorded cyber crime took place in the year 1820!
The loom allowed the repetition of a series of steps in the weaving of special fabrics.
This resulted in a fear amongst employees that their traditional employment was being threatened.
They committed acts of sabotage to discourage further use of the new technology.
IntroductionIntroduction
Internet has offered us a much more convenient way to share information across time and place.
Cyberspace also opened a new venue for criminal activities.
The anonymity of cyberspace makes identity tracing a significant problem which hinders investigations.
Uninformed and misguided users .
CLASSIFICATION OF CYBERCRIMECLASSIFICATION OF CYBERCRIME
1.Computer as Target
2.Computer as an instrumentality
3.Computer as an incidental or other crime
4.Crime associated with the prevalence of computers.
COMPUTER AS A TARGET OF A CRIMECOMPUTER AS A TARGET OF A CRIME
Physical damage
Theft or destruction of information (data).
The spread of viruses , Trojans and worms .
Software piracy, hacking etc.
Computer as an instrumentalityComputer as an instrumentality..
Crimes were either computers or their contents bare used in furtherance of crime
Those offences which are committed by manipulating contents of computer systems.
Include sending e-mails, ransom notes , credit card frauds, telecommunication frauds or theft.
Computer as Incidental Computer as Incidental
With the advent of computer the criminal have started using the technology as an aid for its perpetuation.
They include use of computers as an aid for drug trafficking, money laundering, etc
Means of coordinating .
Copyright violation◦ Sharing of copyright material – Torrents
Software piracy◦ Selling material protected by copyrights
Component theft
Crime with Prevalence of computers.
Types of cyber crimeTypes of cyber crime
Financial crimes -cheating, credit card frauds, money laundering Forgery etc.
Sale of illegal articles: Online gambling:
Intellectual Property crimes
Theft of information contained in electronic form
Email bombing
Types of cyber crimeTypes of cyber crime
Data Diddling Salami attacks
Email spoofing
Cyber Defamation
Cyber stalking
Hacking
Types of cyber crimeTypes of cyber crime
Denial of Service attack
Virus / worm attacks
Logic bombs Trojan attacks
Internet time theft Web jacking
Phishing
Email BombingEmail Bombing
Sending huge volumes of e-mail
To an address or server in an attempt to overflow the mailbox or overwhelm the server
Zip Bombing
Methods of email bombing Mass Mailing Link Listing
Denial of ServiceDenial of Service
Denial of Service - works by flooding the access routers with bogus traffic.
Distributed DoSs (DDoS5) : coordinated
DoS attacks from multiple sources.
Difficult to block because it uses multiple, changing, source IP addresses.
Data DiddlingData Diddling
Changing of data before or during entry into the computer system
Forging or counterfeiting documents used for data entry
Exchanging valid disks and tapes with modified replacements.
Prevention:◦Regular Audits◦Supervising employees
Salami AttackSalami Attack
A series of minor attacks that together results in a larger attack
Used for financial crimes in which criminals steal money or resources a bit at a time from a system
Prevention:◦ Find indications of an attack ◦ Random audits◦ Don't ignore what appear to be errors in computer-
based financial systems.
E-mail SpoofingE-mail Spoofing
The sender address and other parts of the e-mail header are altered .
From, Return-Path and Reply-To fields
Although the e-mail appears to come from the address indicated in the From field it actually comes from another source.
Prevention Antivirus Use cryptographic signatures
Logic BombLogic Bomb
Is a piece of code intentionally inserted into a software system
That will set off a malicious function when specified conditions are met
Prevention:◦Monitoring system ◦Application logs are the keys to identifying
unwarranted activity
H4CK1NGH4CK1NG
Unauthorized remote computer break-ins via a communication networks such as the Internet
Categories of hackers◦White hat or Ethical Hacker◦Grey hat◦Blue hat◦Black hat◦Elite ◦Script kiddie
What can I do?What can I do?
It is not possible to eliminate cyber crime from the cyber space.
It is quite possible to check them.
Awareness is the first step in protecting yourself.
Invest in Anti-virus, Firewall, and SPAM blocking software for your home PC.
Passwords◦ Change passwords on a regular basis ◦ Use complex passwords
Do not automatically check boxes before reading the contents of any agreement etc
What can I do?What can I do?
Avoiding use of Unauthorized software
Avoid opening of unknown email.
Use internet filtering software.
Data Level Security◦Using encrypting softwares
