Skip to content
CY-402 · Fundamental of Cyber Security/Quick Revision Short Notes

Fundamental of Cyber Security (CY-402) - Unit 1 Short Notes

UNIT 1: FUNDAMENTALS OF CYBER CRIME & LEGAL FRAMEWORK (CY-402)

1.0 Introduction to Cyber Crime

1.1 Definition and Evolution of Cyber Crime

  • Definition: Cyber Crime refers to any illegal activity that involves a computer, network, or the internet as a tool, target, or place of criminal conduct. It encompasses crimes where technology is integral to the offense.

  • Evolution:

    • 1970s-80s: Early incidents like phone phreaking, simple virus creation, and unauthorized access to mainframe systems (e.g., "The Creeper" worm).

    • 1990s: Rise of the commercial internet, web defacement, email-based attacks, and the first major financial frauds.

    • 2000s-Present: Sophistication increased with organized crime, state-sponsored attacks, ransomware, cryptojacking, large-scale data breaches, and attacks on critical infrastructure (IoT, Cloud).

1.2 Impact of Internet and Mobile Proliferation

  • Increased Attack Surface: Billions of connected devices (smartphones, IoT) create vast entry points.

  • Anonymity & Scale: Perpetrators can operate remotely across borders, targeting millions simultaneously.

  • Monetization: Digital payment systems and cryptocurrencies enable profitable criminal enterprises.

  • Data as Target: Personal, financial, and corporate data became a valuable commodity ("data is the new oil").

1.3 Key Challenges

Challenge Description
Jurisdiction Crimes cross national borders instantly. Which country's laws apply? Enforcement requires international treaties (e.g., Budapest Convention).
Attribution Hiding identity using proxies, VPNs, Tor, and botnets makes identifying the true perpetrator technically and legally difficult.
Technical Complexity Attacks leverage advanced cryptography, zero-day exploits, and polymorphic malware, requiring high forensic expertise.
Legal Lag Technology evolves faster than legislation. Laws often become obsolete upon enactment.
Evidence Volatility Digital evidence can be altered or destroyed in seconds.

1.4 Nature and Elements of Cyber Criminality

  • Actus Reus (Guilty Act): The technical act (e.g., writing malware, sending a phishing email, accessing a system without authorization).

  • Mens Rea (Guilty Mind): The intention or knowledge to cause harm, gain unauthorized access, or commit fraud. Motive is not always a legal element but is relevant for profiling.

  • Causation: The illegal act must directly cause harm (e.g., data theft, financial loss, service disruption).

  • Legality: The act must be defined as a crime under existing law (e.g., IT Act, 2000 in India).

1.5 Classification/Taxonomy of Cyber Crimes

| Category | Against Persons | Against Property | Against Organizations

Go to where you left off?

Quick Add to Notes

Save questions, your own notes and screenshots into notes filed by unit. It takes a free account.

Create free account

Have an account? Log in