science

Rop Gonggrijp

Rop Gonggrijp is a science 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 Rop Gonggrijp rather than just read about it. In short: Robbert (Rop) Valentijn Gonggrijp (born 14 February 1968) is a Dutch hacker and one of the founders of XS4ALL. Biography Gonggrijp was born in Amsterdam.

Key takeaways

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

Reference excerpt

Robbert (Rop) Valentijn Gonggrijp (born 14 February 1968) is a Dutch hacker and one of the founders of XS4ALL.

Biography Gonggrijp was born in Amsterdam. While growing up in Wormer in the Dutch Zaanstreek area, he became known as a teenage hacker and appeared as one of the main characters in Jan Jacobs's book Kraken en Computers (Hacking and computers, Veen uitgevers 1985, ISBN 90-204-2651-6) which describes the early hacker scene in the Netherlands. Moved to Amsterdam in 1988. Founded the hacker magazine Hack-Tic in 1989. He was believed to be a major security threat by authorities in the Netherlands and the United States. In the masthead of Hack-Tic, Gonggrijp described his role as hoofdverdachte ('prime suspect'). He was convinced that the Internet would radically alter society. In 1993, a number of people surrounding Hack-Tic including Gonggrijp founded XS4ALL, the first ISP that offered access to the Internet for private individuals in the Netherlands. Gonggrijp sold the company to Dutch-Telecom KPN in 1997. After he left XS4ALL, Gonggrijp founded ITSX, a computer security evaluation company, which was bought by Madison Gurkha in 2006. In 2001, Gonggrijp started work on the Cryptophone, a mobile telephone that can encrypt conversations. Since 1989, Gonggrijp has been the main organizer of hacker events held every four years. Throughout the years, he has repeatedly shown his concerns about the increasing amount of information on individuals that government agencies and companies have access to. Rop held a talk titled "We lost the war" at the Chaos Communication Congress 2005 in Berlin together with Frank Rieger. In 2006 he founded the organisation "Wij vertrouwen stemcomputers niet" ("We do not trust voting computers") which campaigns against the use of electronic voting systems without a Voter Verified Paper Audit Trail and which showed in October 2006 on Dutch television how an electronic voting machine from manufacturer Nedap could easily be hacked. These findings were taken seriously both by the Dutch government and by international election observers. Gonggrijp has worked for WikiLeaks, helping prepare the Collateral Murder April 2010 release of video footage from a Baghdad airstrike that killed civilians, including two Reuters journalists. On 14 December 2010, in relation to ongoing investigations of WikiLeaks, the US Department of Justice issued a subpoena ordering Twitter to release information regarding Gonggrijp's account as well as those of Julian Assange, Chelsea Manning, Birgitta Jónsdóttir, Jacob Appelbaum and all 637,000 users following @wikileaks. According to Gonggrijp, the reason is his assistance in enabling WikiLeaks to release the "Collateral Murder" video in April 2010, a WikiLeaks action.

References

External links [1] Personal blog [2] (Dutch and English) [3] (Hack-Tic archive) [4] History of XS4ALL (in Dutch) [5] interview with Gonggrijp (in Dutch) [6] Interview on Voting machines (in Dutch) [7] Extensive Talk with Rop Gonggrijp about his life and the hacker communities in the Netherlands and Germany (in German)

Illustrations

Worked examples

Example 1 — a first encounter with Rop Gonggrijp

Start with the simplest possible case. Write down what Rop Gonggrijp claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 Rop Gonggrijp 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 Rop Gonggrijp 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 Rop Gonggrijp

In research: Rop Gonggrijp appears in science 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 Rop Gonggrijp 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: Rop Gonggrijp is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1968 births, 20th-century Dutch businesspeople, 21st-century Dutch businesspeople, so understanding it makes those chapters shorter.
In everyday life: Look for Rop Gonggrijp 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.

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How to study Rop Gonggrijp in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Rop Gonggrijp 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 Rop Gonggrijp out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Rop Gonggrijp in simple terms?

Robbert (Rop) Valentijn Gonggrijp (born 14 February 1968) is a Dutch hacker and one of the founders of XS4ALL. Biography Gonggrijp was born in Amsterdam.

Why does Rop Gonggrijp matter?

Because it connects several science 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 Rop Gonggrijp?

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 Rop Gonggrijp.