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FSB

British  

abbreviation

  1. the Russian Federal Security Service, founded in 1995

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of FSB

C20: Russian Federalnaya sluzhba bezopasnosti

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Marsalek, an Austrian citizen, is accused of being an intelligence asset for Russia's security service, the FSB.

From BBC • May 4, 2026

Moran's president, Vyacheslav Kalashnikov, is a retired FSB lieutenant colonel, according to the Warsaw Institute, a Polish think tank.

From Barron's • Feb. 23, 2026

Gouldthorpe said businesses represented by the FSB "keep our high streets alive".

From BBC • Feb. 1, 2026

The laptop, designed by a German company, was handed over to the FSB and sold on to Iran, according to the indictment.

From Barron's • Jan. 22, 2026

The FSB has established itself both within Russian power structures and in business.

From Russian Roulette: Russia's Economy in Putin's Era by Vaknin, Samuel

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