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Cyber crime and forensic


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Cyber crime and forensic

  1. 1. CYBER CRIME & FORENSICS Presented By Saisha sukla (u112105) Samikhya Joshi (u112106) Santanu Kumar Das (u112107) Satyanarayana Das (u112108)
  2. 2. Introduction to Cybercrime Computer or computer networks are used as a tool or a target or a place of criminal activity. First recorded cyber crime took place in the year 1820 in France. Unauthorized access to computer systems, data destruction, data alteration, theft of intellectual property. Most important revenue sector for global organized crime.
  3. 3. How it differs from terrestrial crime? easy to learn how to commit require few resources relative to the potential damage caused can be committed in a jurisdiction without being physically present in it are often not clearly illegal
  4. 4. Types of Cybercrime • Hacking • Financial crimes • Phishing • Sale of illegal articles • Software Piracy • Intellectual Property crimes • Cyber Stalking • Forgery • Denial of Service • Cyber Defamation
  5. 5. Hacking• The actual word is “Cracking” and not “Hacking”.• "Deliberately gaining unauthorized access to an information system.“• They help the government to protect national documents of strategic importance, help organizations to protect documents and company secrets,• A Cracker breaks into someone elses computer system, often on a network, bypasses passwords or licenses in computer programs or in other ways intentionally breaches computer security.• But with time , both the word are used interchangeably.
  6. 6. Phishing Acquiring information such as usernames, password and credit card details by disguising as a trustworthy entity. India is among the top 15 countries hosting "phishing" sites which aims at stealing confidential information such as passwords and credit card details.
  7. 7. Cyber StalkingCyber stalking is use of the Internet or other electronic means to stalksomeone. This term is used interchangeably with online harassment andonline abuse.Denial of Service •floods the bandwidth of the victim’s network •fills his e-mail box with spam mail •deprives him of the services he is entitled to access or provide •uses a technique called spoofing and buffer overflow
  8. 8. Software Piracy• illegal copying of genuine programs• counterfeiting and distribution of productsExamples of software piracyEnd user copyingHard disk loadingCounterfeitingIllegal downloads from the Internet
  9. 9. Virus Dissemination•A program that can ‘infect’ other legitimateprograms by modifying them to include a possibly‘evolved’ copy of itself.•Viruses can spread themselves, without theknowledge or permission of the users, topotentially large numbers of programs on manymachines.Typical action of a virus•Erase files•Scramble data on a hard disk•Cause erratic screen behavior•Halt the PC•Just replicate itself!
  10. 10. Cybercriminals
  11. 11. Motivating factors for Cybercrimes  The challenge….. “because it’s there!”  Ego  Espionage  Ideology  Mischief  Money (Extortion or Theft) Revenge
  12. 12. Cost of Cyber crime in IndiaIn India in 2010 29.9 million people fell victim to cyber crime $ 4 billion in direct losses $ 3.6 billion in time spent to resolve crimes 80% of cyber users have been a victim ofcyber crime 17% of adults online have experiencedcybercrime on their mobile phone Source : Nortan Cyber Crime Report2011
  13. 13. Why India? A rapidly growing online user 121 million internet users 65 million active internet users, up 28%from 51 million in 2010 50 million users shop online onecommerce and online shopping sites 46+ million social network users 346 million mobile users had subscribed todata packages Source : IAMAI; Juxt; wearesocial 2011
  14. 14. Combating Cybercrimes Technological measures: Public key cryptography, Digital signatures ,Firewalls, honey pots Cyber investigation: Computer forensics is the process of identifying, preserving, analyzing and presenting digital evidence in a manner that is legally acceptable in courts of law. These rules of evidence include admissibility (in courts), authenticity (relation to incident), completeness, reliability and believability. Legal framework-laws & enforcement
  15. 15. International Legislation Initiatives OECD 1983 – research in criminal law problems of computer related crimes 1992 – Guidelines for the security of information systems G8 1997 – Subgroup of High – Tech Crime OAS 1999 – Established a group of government experts on cyber crime APEC 2002 – commitment to enact a comprehensive set of laws relating to cyber security and cyber crime
  16. 16. International Legislation Initiatives ASEAN and China 2003 – Formulate cooperative and emergency response procedures for enhancing cyber security and combating cyber crime United Nations 1998-2000 – Resolution on developments in the field of Information and Telecommunication in the context of International security 2003 – Resolutions on combating the criminal misuse of Information Technology & on the creation of a global culture of cyber security. Europe union 2003-2005 – Council framework decision on attacks against information system
  17. 17. What about the law? (Indian perspective) Information Technology Act (Amendment) Act 2008 – Chapter XI  65 – Tempering with computer source documents  66 – Computer related offences  66A – punishment for sending offensive messages through communication services etc.  66B – Punishment for dishonestly receiving stolen computer resources or communication devices  66C – Punishment for identity theft  66D – Punishment for cheating by personation by using computer device  66E – Punishment for violation of privacy  66F – punishment for cyber terrorism  67 – punishment for publishing or transmitting obscene material in electronic form
  18. 18. Major Objectives Create effective cyber crime laws Develop acceptable practices for search and seizure Handle jurisdiction issues Cooperate in international investigations Establish effective public/private sector interaction
  19. 19. Safety tips to avoid Cybercrime Use anti-virus software and firewalls  Dont share access to your - keep them up to date computers with strangers Keep your operating system up to  If you have a Wi-Fi network, date with critical security updates and password protect it patches  Disconnect from the Internet Dont open emails or attachments when not in use from unknown sources  Reevaluate your security on a Use hard-to-guess passwords. Don’t regular basis use words found in a dictionary. Remember that password cracking  Make sure your employees and tools exist family members know this info too! Back-up your computer data on disks or CDs often
  20. 20. Prominent news for Cyber crimes Kevin Mitnick’s (“Condor”) hacking spree cost high-tech companies at least $ 291.8 million over a two year span before his capture David L. Smith, a31 year old programmer ,pleaded guilty to creating the Melissa virus and using an ex-rated web site to spread it through cyberspace, causing $80 million damages. Four high school Kids hacked into a Bay Area internet server and used stolen credit card number to order computer equipment: $200k A temporary employer broke into Forbes, computers, caused a computer crash, that cost Forbes $100,000 to restore
  21. 21. Case study 1 The Chennai city police have busted an international gang involved in cyber crime, with arrest of Deepak Prem Manwani (22), who was caught red handed while breaking into an ATM in the city. The dimensions of the city cops’ achievement can be gauged from the fact that they have netted a man who is on the wanted list of formidable FBI of US. At the time of his detention, he had with him Rs 7.5 lakhs knocked off from two ATMs in T Nagar and Abiramipuram in the city. Prior to that, he had walked away with Rs 50,000 from an ATM in Mumbai. While investigating it was found that his audacious crime career started in the internet café. While browsing the net one day, he got attracted to a site which offered him assistance in breaking into the ATMs
  22. 22. Case study 1 His contacts sitting some where in Europe were ready to give him credit card numbers of few American banks for $5 per card. This site also offered the magnetic codes of these cards, but charged $200 per code. The operators of the site had devised a fascinating idea to get the PIN of the card users. They floated a new site which resembled that of a reputed telecom company. That company has millions of subscribers. The fake site offered the visitors to return $11.75 per head which, the site promoters said, had been collected in excess by mistake from them. Believing that it was a genuine offer from the telecom company in question, several lakh subscribers logged on the site to get back the little money. But in the process parted with their PINs
  23. 23. Case study 1 Armed with all requisite data to hack the bank ATMs, the gang started its systematic looting. Apparently Manwani and many others of his group entered into a deal with the gang behind the site and could purchase any amount of data. Meanwhile, Manwani also managed to generate 30 plastic cards that contained necessary data to enable him to break into ATMs. He was so enterprising that he was able to sell away a few such cards to his contacts in Mumbai. On receipt of large scale complaints from the billed credit card users and banks in the US, the FBI started investigation into the affair and also alerted the CBI Manwani has since been enlarged on bail after interrogation by CBI. But the city police believe that this is the beginning of a major cyber crime.
  24. 24. Case study 2 In 1988 Robert Morris, Jr. a 23 year old graduate student in computer science at Cornell and the son of a NSA computer security expert, wrote an experimental, self replicating, self-propagating program called a worm (99 lines of code) and injected into the internet. He choose to release it from MIT, to disguise the fact that the warm came from Cornell. 60,000 computer site at university sites, hospitals, research facilities, corporations and govt. institutions were affected; the estimated cost of dealing with the worms ranged from $200 to $50,000 for each site. Morris was convicted of violating the computer fraud and Abuse Act; he received 3 years probation, 400 hours of community service and a fine of $10050
  25. 25. Next steps
  26. 26. A final word Treat your password like you treat your tooth brush. Never give to any one else to use, and change it every few months.
  28. 28. FORENSICS Forensic Science or forensic is the application of broad spectrum of sciences to answer to questions related to legal system, may be for crime or civil actions. The use of science and technology to investigate and establish facts in criminal or civil courts of law.
  29. 29. COMPUTER FORENSICSGoal of computer forensics is to examine digital media in a forensically sound manner with the aim of identifying, preserving, recovering, analyzing and presenting facts and opinions about the information.
  30. 30. HISTORY Michael Anderson “Father of computer forensics” special agent with IRS Meeting in 1988 (Portland, Oregon) creation of IACIS, the International Association of Computer Investigative Specialists the first Seized Computer Evidence Recovery Specialists (SCERS) classes held
  31. 31. WHY? The main task or the advantage from the computer forensic is to catch the culprit or the criminal who is involved in the crime related to the computers. Computer forensics has emerged as important part in the disaster recovery management Ability to search through a massive amount of data- Quickly, Thoroughly and In any language The importance lies mainly in handling criminal actions such as fraud, phishing, identity theft or many other criminal activities
  32. 32. WHO USES FORENSICS Criminal Prosecutors Civil litigators Insurance Companies Corporations Law Enforcement Officials Individuals
  33. 33. What cyber forensics aims at? Identify root cause of an event to ensure it won’t happen again – Must understand the problem before you can be sure it won’t be exploited again. • Who was responsible for the event? • Most computer crime cases are not prosecuted – Consider acceptability in court of law as our standard for investigative practice. – Ultimate goal is to conduct investigation in a manner that will stand up to legal scrutiny. – Treat every case like a court case!
  34. 34. STEPS FOR COMPUTER FORENSICS: Acquisition Identification Evaluation Presentation
  35. 35. 1) Shut Down the Computer 2) Document the Hardware Configuration of The System 3) Transport the Computer System to A Secure Location 4) Make Bit Stream Backups of Hard Disks and Floppy Disks 5) Mathematically Verify Data on All Storage Devices 6) Document the System Date and TimeMETHEDOLOGY: 7) Make a List of Key Search Words 8) Evaluate the Windows Swap File 9) Evaluate File Slack 10) Evaluate Unallocated Space (Erased Files) 11) Search Files, File Slack and Unallocated Space for Key Words 12) Document File Names, Dates and Times 13) Identify File, Program and Storage Anomalies 14) Evaluate Program Functionality 15) Document Your Findings
  36. 36. EVIDENCES:Forensics involves collection of evidences as an important part for investigation.5 rules of evidences:1) Admissible Must be able to be used in court or elsewhere.1) Authentic Evidence relates to incident in relevant way.1) Complete Exculpatory evidence for alternative suspects.1) Reliable No question about authenticity & veracity.1) Believable Clear, easy to understand, and believable by a jury.
  37. 37. TOP 10 LOCATION FOR EVIDENCE1) Internet History Files2) Temporary Internet Files3) Slack/Unallocated Space4) Buddy lists, personal chat room records, P2P, others saved areas5) News groups/club lists/posting6) Settings, folder structure, file names7) File Storage Dates8) Software/Hardware added9) File Sharing ability10) E-mails
  38. 38. TOOLS AND TECHNIQUES There are two types of computer data1. Persistent data2. Volatile data There are different tools used to collect data An essential toolkit should contain-backup, authentication, decryption, disk editing, log file auditing, IP tracking, data recovery, and file examination. Tools used depend on what data has to be analyzed
  39. 39. Some common tools: Drivespy Encase Forensic tool kit I Look Norton utilies Xways
  40. 40. TECHNIQUES:Cross Drive AnalysisDeleted files analysisLive analysis
  41. 41. DISADVANTAGES It may happen in some cases that the privacy of the client is compromised. There are also the chances of introduction of some malicious programs in the computer system that may corrupt the data at a later stage of time. It is also possible that the data is in dispute and neither of the disputing parties can use the data. Due to this reason the business operations may also be affected. Producing electronic records & preserving them is extremely costly Legal practitioners must have extensive computer knowledge and vice versa
  42. 42. THANK YOU