** IT services and consulting firm Booz Allen Hamilton's BAH.N shares fall 4.6% to $97.54

** U.S. Treasury Department cancels 31 contracts worth $21 mln with co; accuses BAH of failing to protect sensitive data

** “Booz Allen failed to implement adequate safeguards to protect sensitive data, including the confidential taxpayer information it had access to through its contracts with the Internal Revenue Service,” the department says

** In 2025, stock fell 34.5%

(Reporting by Anhata Rooprai in Bengaluru)

((Anhata.Rooprai@thomsonreuters.com))