astronomy

Yair Cohen

Yair Cohen is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Yair Cohen rather than just read about it. In short: Yair Cohen is an English solicitor specialising in internet law, defamation, privacy, online harassment, and reputation management. Cohen was admitted as a solicitor in England and Wales in 1997.

Key takeaways

Yair Cohen belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Yair Cohen to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Yair Cohen from memory before moving on to harder problems.

Reference excerpt

Yair Cohen is an English solicitor specialising in internet law, defamation, privacy, online harassment, and reputation management. Cohen was admitted as a solicitor in England and Wales in 1997. He founded Cohen Davis Solicitors (which trades as The Internet Law Centre) a UK law firm focusing on complex defamation and internet harassment cases, including those involving social media abuse, disclosure orders, and privacy injunctions. His work has been reported in national and international media, and The Telegraph described him as a "troll-hunting lawyer".

Early career and Internet Law cases Cohen graduated from City University in London in 1998. He went on to become one of the first lawyers in the UK to specialise in Internet Law and in 2011 he obtained the first ever reported anti-trolls disclosure order from the UK website MoneySavingExperts, in relation to internet trolls who targeted one of his clients. A year later, Cohen acted for Nicola Brookes in proceedings that resulted in the first UK court order requiring Facebook to disclose the identities of anonymous internet trolls. In 2015 Cohen became the first UK lawyer to be given court permission to serve a court injunction on an anonymous internet troll via the social media platform WhatsApp. The case involved a London student suffering abuse on Instagram by an anonymous person posting racial and sexual abuse, and threatening to disclose private information. In 2017, Cohen acted for a transgender escort, in the case of GYH v Persons Unknown [2017] EWHC 3360 (QB). The case concerned an injunction application to prevent the publication, on Escorts advertising websites, that his client had HIV/Aids and that she was transgender. The court held that she was not required to disclose her transgender status in any publication, emphasising that all individuals, regardless of occupation or identity, are entitled to privacy protection. The court further held that the "public interest" defence to harassment and/or breach of privacy, would not be applicable where the publication concerns false, or unproven allegations that someone had HIV/Aids. In 2018, Cohen obtained damages and an injunction against businessman Paul Curran and his company Curran Consulting Ltd after he managed to prove that Curran was the individual who had been trolling and harassing his client, Lindsey Goldrick-Dean for over 12 years following a brief dating period between the two over a decade earlier. At the time, this was believed to be the longest ever harassment campaign against a woman in the UK. In 2020, in one of first online dating blackmail cases in the UK, Cohen acted for a claimant, an American businessman who met a female escort through the website Seeking Arrangements, the purpose of which is to connect clients interested in a sugar dating relationship. The case involved attempts to extort money through threats of publishing private material against the businessman by the female escort. The injunction was granted on common law grounds of misuse of private information and the Protection from Harassment Act 1997. Some media coverage has criticised Cohen’s law firm, Cohen Davis Solicitors, for taking a hard line in disputes about online reviews. In 2017, The Independent reported that the firm wrote to a TripAdvisor user on behalf of a venue, alleging that a one star review was defamatory and requesting further information and its removal, and referred to possible court action.

Career

Sweet Bobby Between 2021 and 2024, Cohen represented Kirat Assi, victim of the "Sweet Bobby" catfishing case against her cousin Simran Bhogal. The case is considered one of the longest catfishing cases in history. The case involved complex factual, legal and evidential tasks and it was eventually conceded with a significant financial settlement by Bhogal to Assi. The case was covered by a podcast and the 2024 Netflix documentary Sweet Bobby.

Other notable work In 2025 Cohen represented Charlie Mullins, founder of Pimlico Plumbers, before the Honours Committee after Mr Mullins was told that his OBE Award was at risk of being forfeited following a series of alleged offensive comments he allegedly made on social media. No order was made against Mr Mullins and he was eventually allowed to keep the award.

Media and other publications Cohen has been featured as Lawyer of the Week by The Times, and his work was featured in Forbes, Daily Telegraph, Bloomberg and the Law Society Gazette. He has made a number of newspaper contributions including to the Mail Plus, and is the author of a self-published book, The Net is Closing: Birth of the Internet Police (2015), where he wrote about his early experiences working as an Internet lawyer and his prediction about the future policing of the internet.

References

Illustrations

Worked examples

Example 1 — a first encounter with Yair Cohen

Start with the simplest possible case. Write down what Yair Cohen claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Yair Cohen before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Yair Cohen ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Yair Cohen

In research: Yair Cohen appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Yair Cohen in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Yair Cohen is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1968 births, 21st-century English writers, Alumni of City, University of London, so understanding it makes those chapters shorter.
In everyday life: Look for Yair Cohen outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Yair Cohen” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Yair Cohen in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Yair Cohen means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Yair Cohen out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Yair Cohen in simple terms?

Yair Cohen is an English solicitor specialising in internet law, defamation, privacy, online harassment, and reputation management. Cohen was admitted as a solicitor in England and Wales in 1997.

Why does Yair Cohen matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Yair Cohen?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Yair Cohen.