Computers don't only raise technical questions — they raise questions of right and wrong, and the law has stepped in to answer some of them. Who owns your data? Is it a crime to guess someone's password even if you change nothing? Where do the millions of old phones go? A good computer scientist weighs the ethical and environmental cost of technology, not just whether it works.
The three key laws — UK and US
Three kinds of law come up again and again, and most countries have some version of each. In the UK, the Data Protection Act 2018 (which brings UK GDPR into UK law) governs how organisations must handle your personal data — kept accurate, secure, used only for stated purposes, and no more collected than needed; in the US, the closest equivalents are sector-specific, like COPPA (protecting children's data online) and state laws such as California's CCPA. The UK's Computer Misuse Act 1990 makes unauthorised access to a computer a crime — even just logging into someone's account without permission, whether or not you change anything — and the US's direct equivalent is the Computer Fraud & Abuse Act (CFAA) 1986, which criminalises the same thing. The UK's Copyright, Designs and Patents Act 1988 protects original work — software, music, images — and the US achieves the same through the US Copyright Act plus the DMCA for enforcing it online; copying or sharing someone's work without permission is illegal on both sides of the Atlantic.
| Protects against | UK law | US law |
|---|---|---|
| Misuse of personal data | Data Protection Act 2018 | COPPA / state privacy laws |
| Unauthorised access (hacking) | Computer Misuse Act 1990 | Computer Fraud & Abuse Act 1986 |
| Copying others' original work | Copyright, Designs & Patents Act 1988 | US Copyright Act & DMCA |
The environmental cost
Making and running computers has a physical footprint. E-waste — discarded electronics — is the fastest-growing waste stream, often shipped abroad where toxic metals like lead and mercury poison soil and water. Data centres consume vast amounts of electricity. Responsible computing means repairing and reusing devices, recycling properly, and designing energy-efficient systems, rather than treating gadgets as disposable.
The digital divide and ethics
The digital divide is the gap between those with good access to technology and the internet and those without. It affects poorer families, rural areas and older people, and it deepens inequality when jobs, schooling and services move online. Alongside it sit ethical questions of privacy, censorship and bias in automated systems — issues with no simple legal answer, only careful judgement.
Tip: Learn the law names exactly, with their years, and one thing each protects — whichever country's version you're studying. Precise names — "Computer Misuse Act 1990" or "Computer Fraud & Abuse Act" — earn more marks than "the hacking law".