(BOSTON) — A U.S. cybersecurity company says Russian military agents successfully hacked the Ukrainian gas company at the center of the scandal that led to President Donald Trump’s impeachment. Russian agents launched a phishing campaign in early November aimed at stealing the login credentials for employees of Burisma Holdings, the gas company, according to Area 1 Security, a Silicon Valley company that specializes in e-mail security. Hunter Biden, son of former U.S.