Intelligence officer in the context of "Reinhard Gehlen"

Espionage, spying, or intelligence gathering, as a subfield of the intelligence field, is the act of obtaining secret, confidential, or in some way valuable information. Such information is also referred to as intelligence. A professional trained in conducting intelligence operations by their government may be employed as an intelligence officer. Espionage may be conducted in a foreign country, domestically or remotely. The practice is clandestine, as it is by definition unwelcome. In some circumstances, it may be a legal tool of law enforcement and in others, it may be illegal and punishable by law.

Espionage is often part of an institutional effort by a government or commercial concern. The term is frequently associated with state spying on potential or actual enemies for military purposes. However, there are many types of espionage. Industrial espionage, for example, involves spying on civilians and their respective business or corporate interests.

The Intelligence field, in simplistic terms, is a collection of the people who gather or sift through intelligence. Those persons popularly called "spies" are a small but important part of the intelligence field. The intelligence field is the top-level field composed of people and organizations and their involvement the systematic espionage, analysis, and dissemination of intelligence to support policymaking and key stakeholder decision-making, primarily in matters related to national security, military affairs, law enforcement, and international relations. Collectively, that process of intelligence is usually called the intelligence cycle. The intelligence field can encompass a range of subfields including; espionage, surveillance, data analysis, and counterintelligence, all aimed at understanding threats, opportunities, and the intentions and power projection of foreign entities. While the act of espionage is illegal throughout the world, espionage is only a single subfield of the intelligence field. There are many subfields of intelligence that are not illegal everywhere, such as Open-source intelligence (OSINT).

Intelligence work can be conducted by government intelligence agencies, police forces, and military intelligence units. This work can also be engaged by private organizations, including; private intelligence agencies, multinational corporations, private investigators, drug cartels, narcotic cartels, terrorist groups, and others. Individuals employed by these organizations can either be fully employed officers of intelligence agencies called intelligence officers, or single and mission-specific solitary contracting agents who are commonly known as "secret agents." Confusingly, the term "spy" has no definition at most intelligence agencies, but is codified in many state judicial systems as an illegal operator.

Turla or Uroboros (Russian: Турла) is a trojan package that is suspected by computer security researchers and Western intelligence officers to be the product of a Russian government agency of the same name.

High infection rates of the virus were observed in Russia, Kazakhstan and Vietnam, followed by US and China, and low infection rates in Europe, South America and Asia (including India).

Harry St John Bridger Philby, CIE (3 April 1885 – 30 September 1960), also known as Jack Philby or Sheikh Abdullah (Arabic: الشيخ عبدالله), was a British Arabist, advisor, explorer, writer, and a colonial intelligence officer who served as an advisor to King Abdulaziz ibn Saud, the founder of Saudi Arabia.

As he states in his autobiography, he "became something of a fanatic" and in 1908 "the first Socialist to join the Indian Civil Service". After studying Oriental languages at the University of Cambridge, he was posted to Lahore in the Punjab in 1908, acquiring fluency in Urdu, Punjabi, Baluchi, Persian and eventually Arabic. He converted to Islam in 1930 and later became an adviser to Ibn Saud, urging him to unite the Arabian Peninsula under Saudi rule, and helping him to negotiate with the United Kingdom and the United States when petroleum was discovered in 1938. His second marriage was to a Saudi Arabian woman, Rozy al-Abdul Aziz.

Brigadier General Amir Sultan Tarar, also known by his nom de guerre Colonel Imam (4 April 1944 – 23 January 2011), was a Pakistani military officer and diplomat who served as the Consul-General of Pakistan at Herat, Afghanistan. A Pakistan Army officer and special operations specialist, he was a member of the Special Service Group (SSG), Pakistan's army special forces, and was an intelligence officer in the ISI. A veteran of the Soviet–Afghan War, he is widely believed to have played a key role in the formation of the Taliban, after having helped train the Afghan mujahideen on behalf of the United States in the 1980s.

"Colonel Imam," as Tarar was also known, was a commando-guerrilla warfare specialist, trained Mullah Omar and other Taliban factions and leaders. Colonel Imam remained active in Afghanistan's civil war until the 2001 United States led War on Terrorism, and supported the Taliban publicly through media.

Yidongyuan (Chinese: 颐东苑社区; pinyin: Yídōngyuàn shèqū; lit. 'East Summer Palace Garden') is a government compound in Beijing, China which serves as the headquarters of the Ministry of State Security (MSS). The facility consists of an office complex and residential community occupying a full city block in the Xiyuan area of Beijing's Haidian District. Closed to the public, and separated by a perimeter wall, the secretive nondescript facility is believed to be staffed by approximately 10,000 intelligence officers and support staff.

Unlike foreign counterparts such as the American CIA's George Bush Center for Intelligence, the SIS Building housing the British MI6, or the Lubyanka Building of Soviet KGB and Russian FSB, Yidongyuan is distinct in housing employees and their families in apartments on site.