1. FSB - Noun
2. FSB - Proper noun
a federally chartered savings bank
the internal counterintelligence agency of the Russian Federation and successor to the Soviet KGB; formerly led by Vladimir Putin
Source: WordNetOf course the biggest mafia in Russia has always been the government; in Soviet times, the Communist Party, and now a circle of former KGB and FSB. Martin Cruz Smith
A group of FSB officers were covertly inserted into Rodchenkov’s doping control team. Source: Internet
Ben Francis, FSB Wales Policy Chair, welcomed the business support and urged the UK Government to respond to Welsh Government’s proposal for Welsh businesses to take early advantage of the Job Support Scheme. Source: Internet
Actually you cannot just join the FSB, you should be recommended. Source: Internet
A handful of Russian companies are approved by the domestic intelligence service, the FSB, to provide combined systems of software and hardware that gather and store the contents of phone calls and text messages. Source: Internet
As Soldatov explains, prior to allegations that it interfered in the 2016 U.S. presidential elections, the FSB was well regarded in the West. Source: Internet