Computer Fraud - Chapter 5

Threats to AIS

  • Natural and Political Disasters: Includes events like storms, hurricanes, tornadoes, and earthquakes.
  • Software Errors and Equipment Malfunctions: Software bugs that impair business operations.
  • Unintentional Acts: Mistakes made by humans.
  • Intentional Acts:
    • Computer crime.
    • Fraud.
    • Intentional sabotage of information systems.
    • Reference to Brian Krebs' blog (krebsonsecurity.com).

Fraud

  • Definition: Any means used to gain an unfair advantage over another person.
  • Elements:
    • False statement, representation, or disclosure.
    • Material fact inducing action by a victim.
    • Intent to deceive.
    • Victim reliance on misrepresentation.
    • Injury or loss suffered by the victim.
  • Characterization:
    • White-collar crime: Financially motivated, nonviolent crime.
    • Examples: Identity theft.
    • Often perpetrated by knowledgeable insiders.

Two Categories of Fraud

  • Misappropriation of Assets:
    • Theft of company assets.
    • Includes physical assets (e.g., cash, inventory) and digital assets (e.g., intellectual property, customer data).
  • Fraudulent Financial Reporting:
    • "Cooking the books".
    • Examples: Booking fictitious revenue, overstating assets.

Auditor’s Responsibility (SAS No. 99 / AU-C Section 240)

  • Requirements:
    • Understand fraud.
    • Discuss the risks of material fraudulent misstatements.
    • Obtain information.
    • Identify, assess, and respond to risks.
    • Evaluate audit test results.
    • Document and communicate findings.
    • Incorporate a technology focus.

Conditions for Fraud (Fraud Triangle)

  • Three conditions must be present for fraud to occur:
    • Pressure:
      • Employee:
        • Financial pressures.
        • Lifestyle pressures.
        • Emotional pressures.
      • Financial Statement:
        • Financial pressures.
        • Management pressures.
        • Industry conditions.
    • Opportunity:
      • To commit fraud.
      • To conceal fraud.
      • To convert assets to personal gain.
    • Rationalization:
      • Justifying behavior.
      • Attitude that rules don’t apply.
      • Lack of personal integrity.
  • Indicators related to Pressure, Opportunity, or Rationalization:
    • Significant cash flow problems or difficulties in collecting receivables or paying payables.
    • Dominant and unchallenged management.
    • The perception that everyone is committing fraud.

Computer Fraud

  • Definition: Fraud committed using a computer.
  • Classifications:
    • Input fraud.
    • Processor fraud.
    • Computer instruction fraud.
    • Data fraud.
    • Output fraud.
  • Example: The movie "Office Space," where employees change computer code to divert fractions of pennies to their account.
  • Other movies with fraud-related plots: "Catch Me If You Can," "The Informant!"

Preventing and Detecting Fraud

  1. Make Fraud Less Likely to Occur
    • Organizational Systems:
      • Create a culture of integrity.
      • Adopt a structure that minimizes fraud; create governance (e.g., Board of Directors).
      • Assign authority for business objectives and hold individuals accountable; ensure effective supervision and monitoring.
      • Communicate policies.
      • Develop security policies to guide control procedures.
      • Implement change management and project development acquisition controls.
  2. Make It Difficult to Commit
    • Organizational Systems:
      • Develop strong internal controls.
      • Segregate accounting functions.
      • Use properly designed forms.
      • Require independent checks and reconciliations.
      • Restrict access.
      • Implement system authentication.
      • Use computer controls over input, processing, storage, and output.
      • Use encryption.
      • Fix software bugs and update systems regularly.
      • Destroy hard drives when disposing of computers.
  3. Improve Detection
    • Organizational Systems:
      • Assess fraud risk.
      • Conduct external and internal audits.
      • Establish a fraud hotline (e.g., In Dubai - 800-2626).
      • Maintain an audit trail of transactions.
      • Install fraud detection software.
      • Monitor system activities (user and error logs, intrusion detection).
  4. Reduce Fraud Losses
    • Organizational Systems:
      • Insurance.
      • Business continuity and disaster recovery plan.
      • Store backup copies of program and data files in a secure, off-site location.
      • Monitor system activity.

Key Terms

  • Sabotage
  • Cookie
  • Fraud
  • White-collar criminals
  • Corruption
  • Investment fraud
  • Misappropriation of assets
  • Fraudulent financial reporting
  • Pressure
  • Opportunity
  • Rationalization
  • Lapping
  • Check kiting
  • Computer fraud

Case Study: Check Kiting

  • Scenario: An executive confesses to kiting 100,000100,000.
    • What is kiting, and how can it be prevented?
    • How to respond to the confession?
    • What issues to consider before pressing charges?

Check Kiting Explained

  • Definition: Creating cash using the time lag between check deposit and clearance.
  • Illegally exploiting float time between banks, creating false balances and accessing unavailable money.

Example of Check Kiting

  • Person A has two bank accounts:
    • Bank 1 (Account A): Little money.
    • Bank 2 (Account B): Little or no money.
  • Steps:
    1. Person A writes a check for 5,0005,000 from Account A (Bank 1) and deposits it into Account B (Bank 2).
    2. Bank 2 credits Account B with 5,0005,000 immediately (banks often make funds available before clearance).
      • Note: Regulations (e.g., U.S. Federal Reserve’s Regulation CC) require banks to make certain amounts available quickly (e.g., 225225 the next business day in the U.S.).
    3. Before Bank 1 realizes insufficient funds in Account A, Person A withdraws 5,0005,000 from Account B (Bank 2).
    4. Bank 1 finds insufficient funds and returns the check unpaid.
  • Result:
    • Bank 2 is missing 5,0005,000.
    • Person A has taken the money, benefiting from "created" money.

Real-World Cases of Check Kiting

  1. First National Bank of Keystone:
    • Executives involved in a famous check kiting scandal in the late 1990s.
    • Lesson: Check kiting can collapse banks/companies (e.g., a loss of 778778 million).
  2. Frank Abagnale:
    • Forged and passed checks worth millions in the 1960s.
    • His life story was popularized by the movie "Catch Me If You Can."
    • Lesson: Trust in appearance can be dangerous.

Responding to a Check Kiting Confession

  • Detection: Analyze all interbank transfers; a significant increase is a red flag.
  • Immediate Actions:
    • Investigate the fraud and determine actual losses (employees may under-report).
    • Determine controls to prevent or detect similar frauds.

Issues to Consider Before Pressing Charges

  • Impact on the business's future success.
  • Effect of adverse publicity.
  • Social responsibility.
  • Strength of evidence for conviction.
  • Message sent to other employees.
  • Potential civil liabilities.

Review Question

  • Which control is most important to deter fraud?
    • (c) Segregation of duties (Correct).