"Softwar - La Guerre Douce" (in English "Sotfwar, the soft war") is a technothriller novel by Thierry Breton and Denis Baldwin-Beneich published 1984 in French[1] and translated in 10 languages.
Bredan is an American professor at the MIT in the field of Information Technology, who was hired by the NSA, in the book the "National Software Agency".
She finds out that all the Russian computers happened to be physically tampered with the installation of an additional processing unit made of a Zilog Z80 microprocessor and two ROMs.
Mikhail Gorbachev, who's not yet president, sends Ioulia to Geneva to publicly condemn the American software bomb at an international summit.
When both meet, Ioulia tells Brendan about her discovery and asks him to disclose the Russian undertaking to the press, so to force her government to withdraw their control system.