science

Project SHAMROCK

Project SHAMROCK 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 Project SHAMROCK rather than just read about it. In short: Project SHAMROCK was a United States government domestic espionage project operated by the predecessor to the National Security Agency (NSA) between the 1940s and 1970s. Project SHAMROCK was the sister project to Project MINARET, an espionage exercise started in August 1945.

Key takeaways

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

Reference excerpt

Project SHAMROCK was a United States government domestic espionage project operated by the predecessor to the National Security Agency (NSA) between the 1940s and 1970s. Project SHAMROCK was the sister project to Project MINARET, an espionage exercise started in August 1945. Project MINARET involved the accumulation of all telegraphic data that entered or exited the United States. The Armed Forces Security Agency (AFSA) and its successor, the NSA, were given direct access to daily microfilm copies of all incoming, outgoing, and transiting telegrams via the Western Union and its associates RCA and ITT. NSA did the operational interception, and, if there was information that would be of interest to other intelligence agencies, the material was passed to them. Intercepted messages were disseminated to the FBI, CIA, Secret Service, Bureau of Narcotics and Dangerous Drugs (BNDD), and the Department of Defense. No court authorized the operation and there were no warrants.

Operations According to military historian Stephen Budiansky, the precursor to the project occurred in 1940: "In January 1940 the Army's adjutant general sent a letter to the president of RCA, David Sarnoff, asking if a Lieutenant Earle F. Cook might be assigned to the company..." Cook photographed all international commercial cablegrams. "The clandestine arrangement—almost certainly illegal—set a precedent..." Official wartime censorship began in Dec. 1940, when all cables were "turned over to the government for inspection." According to Louis W. Tordella, "the collection program 'just ran on' ever since its beginning in World War II 'without a great deal of attention from anyone'..." Three major cable companies provided copies of all international telegrams passing through New York, Washington, and San Francisco. In the 1950s, "New Shamrock" tapped the links of 60–70 foreign embassies. According to FBI historian Athan Theoharis, the post-World War II continuation of Project SHAMROCK brought hesitation from the telegraph companies, who were concerned about the legality of their actions and that employees would reveal the companies' government cooperation to the public. Their fears were assuaged after a promise from Attorney General Tom Clark that the U.S. government would not prosecute the companies for their participation in Project SHAMROCK, and after Congress approved a bill section that made it illegal for "unauthorized" individuals to reveal information related to code-breaking, which was a part of SHAMROCK's operations. At the height of Project SHAMROCK, 150,000 messages were printed and analyzed by NSA personnel in a month.

Investigation In May 1975 however, Congressional critics began to investigate and expose the program. As a result, NSA director Lew Allen terminated it, on his own authority rather than that of other intelligence agencies. According to Budiansky, a 1977 US Department of Justice review concluded wiretap laws were violated, but "If the intelligence agencies possessed too much discretionary authority with too little accountability, that would seem to be a 35-year failing of Presidents and the Congress rather than the agencies or their personnel." The testimony of both the representatives from the cable companies and of director Allen at the hearings prompted Senate Intelligence Committee chairman Senator Frank Church to conclude that Project SHAMROCK was "probably the largest government interception program affecting Americans ever undertaken." One result of these investigations was the 1978 creation of the Foreign Intelligence Surveillance Act (FISA) which limited the powers of the NSA and put in place a process of warrants and judicial review. Another internal safeguard was United States Signals Intelligence Directive 18 (USSID 18), an internal NSA and intelligence community set of procedures, originally issued in 1980. USSID 18 was the general guideline for handling signal intelligence (SIGINT) inadvertently collected on US citizens, without a warrant, prior to the George W. Bush administration. The post-Clinton era interpretations of FISA and USSID 18's principles assume that the executive branch has unitary authority for warrantless surveillance. This assertion came under congressional investigation as an apparent violation of FISA's intent.

See also COINTELPRO DCSNet ECHELON FBI Index Main Core PRISM Stellar Wind ThinThread Trailblazer Project Turbulence Warrantless searches in the United States

References

External links Recollections from the Church Committee's Investigation of NSA: Unlucky SHAMROCK, CIA Center for the Study of Intelligence Unlucky SHAMROCK: The View From the Other Side, James G. Hudec, August 2000 ECHELON: America's Secret Global Surveillance Network The NSA's Global Spying Network | by Patrick S. Poole The National Security Agency: The Secret Unveiled Development of Surveillance Technology & Risk of Abuse of Economic Information | PDF Schneier on Security: Project Shamrock House report on Project Minaret and Project Shamrock

Worked examples

Example 1 — a first encounter with Project SHAMROCK

Start with the simplest possible case. Write down what Project SHAMROCK 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 Project SHAMROCK 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 Project SHAMROCK 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 Project SHAMROCK

In research: Project SHAMROCK 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 Project SHAMROCK 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: Project SHAMROCK is common in secondary-school and first-year university syllabi. It links to neighbouring topics Federal Bureau of Investigation operations, Government databases in the United States, National Security Agency operations, so understanding it makes those chapters shorter.
In everyday life: Look for Project SHAMROCK 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.

Affiliate

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

How to study Project SHAMROCK in 20 minutes

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

Frequently asked questions

What is Project SHAMROCK in simple terms?

Why does Project SHAMROCK 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 Project SHAMROCK?

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 Project SHAMROCK.