This Dec. 22, 2014, photo provided by Riverhead Publishers shows journalist and author Masha Gessen, who writes extensively about Russia. Gessen said it was in 2015 — when cybersecurity firm Secureworks first detected attempts to break into her Gmail — that she began noticing people who seemed to materialize next to her in public places in New York and speak loudly in Russian into their phones, as if trying to be overheard. She said this only happened when she put appointments into the online calendar linked to her Google account. (Tanya Sazansky/Riverhead Publishers via AP)
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