

It alerted the police before the Hyderabad blasts and gave repeated warnings of a possible attack on Mumbai through the sea before the November 2008 Mumbai attacks. It was reported in 2008 that the IB had been successful in busting terror modules. IB had mixed success in counter-terrorism. IB operated a counterintelligence programme to prevent the CIA from gathering information about the preparations and activities related to the Indian Nuclear weapons project before the Pokhran-II nuclear tests. The external intelligence branch was handed to the newly created Research and Analysis Wing. Due to lapses on the part of the Intelligence Bureau to predict the Sino-Indian War of 1962, and later on, intelligence failure in the India-Pakistan War in 1965, it was bifurcated in 1968 and entrusted with the task of internal intelligence only. The IB was initially India's internal and external intelligence agency. The bureau is authorised to conduct wiretapping without a warrant. It also has an email spying system similar to FBI's Carnivore system. The IB is also rumoured to intercept and open around 6,000 letters daily. On rare occasions, IB officers interact with the media during a crisis situation. The bureau also grants the necessary security clearances to Indian diplomats and judges before they take the oath. The IB also passes intelligence between other Indian intelligence agencies and the police. One known task of the IB is to clear licences to amateur radio enthusiasts. Many times even members' own family members are unaware of their whereabouts. Understanding of the shadowy workings of the IB is largely speculative. The IB was trained by the Soviet KGB from the 1950s onward until the collapse of the Soviet Union. Due to the extreme secrecy surrounding the agency, there is little concrete information available about it or its activities. The Intelligence Bureau reportedly has a lot of successes to its credit, but operations conducted by the IB are rarely declassified. The IB was also tasked with other external intelligence responsibilities as of 1951 until 1968, when the Research and Analysis Wing was formed. All spheres of human activity within India and in the neighborhood are allocated to the charter of duties of the Intelligence Bureau. In addition to domestic intelligence responsibilities, the IB is particularly tasked with intelligence collection in border areas, following the 1951 recommendations of the Himmat Singh Ji Committee (also known as the North and North-East Border Committee), a task entrusted to the military intelligence organisations prior to independence in 1947.

However, the Director of Intelligence Bureau (DIB) has always been an IPS officer. The Bureau comprises employees from law enforcement agencies, mostly from the Indian Police Service (IPS) or the Indian Revenue Service (IRS) and the military. Shrouded in secrecy, the IB is used to garner intelligence from within India and also execute counter-intelligence and counter-terrorism tasks. After Indian independence in 1947, IPI was renamed as the Intelligence Bureau under the Ministry of Home Affairs. It came to be called Indian Political Intelligence (IPI) in 1921, constituting a surveillance and monitoring agency run jointly by the India Office and the Government of India and maintaining close contact with Scotland Yard and MI5. In 1909, the Indian Political Intelligence Office was established in England in response to the development of Indian revolutionary activities. The main concern of the time was to monitor Russian troop deployments in Afghanistan so as to avoid an invasion of British India from the northwest. In 1885, Major General Charles MacGregor was appointed Quartermaster General for the British Indian Army at Simla and thereby became responsible for its intelligence activities.
