With the widespread use of digital technology in business and daily life, cybercrimes have emerged as a major threat. The Information Technology Act, 2000 was introduced to address offences involving computers, networks, and electronic data. This article explains the types of cyber crimes recognized under Indian law and the associated penalties.

Meaning of Cyber Crime
Cyber crime refers to any criminal activity involving computers, networks, or digital devices. These crimes can target individuals, businesses, or governments and can involve data theft, unauthorized access, fraud, defamation, and more.
Example: If someone hacks into a company’s system and steals customer data, it is a cybercrime.
Classification of Cyber Crimes under IT Act, 2000
The Act categorizes cyber crimes into two main types:
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Civil wrongs – Usually involve financial compensation (e.g., data theft).
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Criminal offences – Punishable with imprisonment and/or fines (e.g., hacking, identity theft).
Common Types of Cyber Crimes and Penalties
Below are the major cyber crimes covered under the Act:
a. Hacking (Section 66)
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Definition: Unauthorized access to or tampering with a computer system or data.
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Penalty: Imprisonment up to 3 years and/or fine up to ₹5 lakh.
Example: Deleting or altering files in a system without permission.
b. Data Theft (Section 43)
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Definition: Accessing, downloading, or copying data without the consent of the data owner.
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Penalty: Compensation to the affected party (civil liability).
Example: Downloading confidential business reports from a competitor’s system.
c. Identity Theft (Section 66C)
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Definition: Fraudulent use of another person’s personal data (e.g., passwords, digital signatures).
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Penalty: Imprisonment up to 3 years and/or fine up to ₹1 lakh.
Example: Using someone else’s Aadhaar details to open a bank account.
d. Cheating by Personation (Section 66D)
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Definition: Deceiving someone by pretending to be another person via electronic means.
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Penalty: Imprisonment up to 3 years and/or fine up to ₹1 lakh.
Example: Sending a fake email impersonating a bank to steal login details (phishing).
e. Cyber Stalking (Section 66E)
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Definition: Repeatedly following, contacting, or harassing someone using electronic communication.
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Penalty: Imprisonment up to 3 years and/or fine up to ₹2 lakh.
f. Cyber Terrorism (Section 66F)
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Definition: Using computer resources to threaten the unity, integrity, or security of India.
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Penalty: Life imprisonment.
Example: Hacking into a government defense system with malicious intent.
g. Sending Offensive Messages (Section 66A) [Struck Down]
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Originally punished for sending offensive messages through communication services, but this section was declared unconstitutional by the Supreme Court in 2015 (Shreya Singhal v. Union of India).
h. Publishing Obscene Material (Section 67)
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Definition: Publishing or transmitting obscene or sexually explicit content in electronic form.
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Penalty:
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First conviction: Up to 3 years and fine up to ₹5 lakh
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Subsequent: Up to 5 years and fine up to ₹10 lakh
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Example: Uploading pornographic videos on a public website.
i. Child Pornography (Section 67B)
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Definition: Publishing or browsing content that exploits children in sexually explicit acts.
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Penalty: Up to 5 years for the first offence, and up to 7 years for repeat offences.
j. Tampering with Computer Source Documents (Section 65)
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Definition: Intentional alteration or destruction of source code required to be maintained by law.
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Penalty: Up to 3 years imprisonment and/or fine up to ₹2 lakh.
Adjudication and Legal Recourse
1. Adjudicating Officer
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Appointed to settle disputes involving damages up to ₹5 crore.
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Has powers similar to a civil court.
2. Cyber Appellate Tribunal
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Handles appeals against decisions of Adjudicating Officers.
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Final appeal lies with the High Court.
Responsibilities of Intermediaries (Section 79)
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Intermediaries (e.g., social media platforms, ISPs) are exempt from liability if:
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They act only as facilitators.
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They take prompt action to remove offensive content upon notice.
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This is known as the "safe harbour" protection.
Example
Case: Avnish Bajaj v. State (Bazee.com case)
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A CD containing obscene content was sold on a website.
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Though the CEO did not upload it himself, he was held liable under Section 67.
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This case highlighted the liability of intermediaries before Section 79 was amended.
Quick Review
Section | Offence | Description | Penalty |
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Sec 43 | Damage to computer system or network | Unauthorized access, downloading, copying, introducing viruses, causing damage to data or systems | Compensation to the affected person (civil liability) |
Sec 43A | Failure to protect sensitive data | Negligence by a body corporate in protecting personal/sensitive data | Compensation to the affected person if wrongful loss/damage occurs |
Sec 65 | Tampering with computer source documents | Altering, concealing, or destroying legally required source code or programs | Imprisonment up to 3 years, or fine up to ₹2 lakh, or both |
Sec 66 | Computer-related offences | Dishonestly or fraudulently committing any act under Section 43 | Imprisonment up to 3 years, or fine up to ₹5 lakh, or both |
Sec 66A | Sending offensive messages (Struck down) | Sending offensive, false, or menacing messages electronically | Struck down by Supreme Court in 2015 (Shreya Singhal v. Union of India) |
Sec 66B | Dishonest receiving of stolen computer resource | Knowingly receiving stolen computer data or devices | Imprisonment up to 3 years, or fine up to ₹1 lakh, or both |
Sec 66C | Identity theft | Using another person’s password, digital signature, or unique ID fraudulently | Imprisonment up to 3 years, or fine up to ₹1 lakh, or both |
Sec 66D | Cheating by personation using computer | Impersonating someone else electronically to cheat (e.g., phishing, fake emails) | Imprisonment up to 3 years, or fine up to ₹1 lakh, or both |
Sec 66E | Violation of privacy | Capturing, publishing, or transmitting images of private areas without consent | Imprisonment up to 3 years, or fine up to ₹2 lakh, or both |
Sec 66F | Cyber terrorism | Acts intended to threaten national security, integrity, sovereignty, or cause death/injury using IT | Imprisonment for life |
Notes for Exam Preparation
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Sections 43 & 43A deal mainly with civil liability (compensation).
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From Section 65 onwards, the offences become criminal with imprisonment and fines.
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Section 66A has been struck down — do not quote as valid law, but remember the case name: Shreya Singhal v. Union of India (2015).
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Section 66F is the most serious offence under the Act, relating to cyber terrorism.
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Be clear on the difference between identity theft (66C) and cheating by impersonation (66D).
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Most penalties involve up to 3 years of imprisonment and/or monetary fines.
Conclusion
The Information Technology Act, 2000 lays down a comprehensive legal framework to combat cyber crimes in India. With evolving technology, the nature of crimes has become more complex, making it crucial for businesses and individuals to understand legal protections and responsibilities. For UGC NET Commerce students, knowledge of cyber crime laws and their enforcement is important for understanding the legal environment of modern digital commerce.