Foreign government hackers continue to target the personal accounts of U.S. senators and their aides — and the Senate’s security office has refused to defend them, a lawmaker says. Sen. Ron Wyden, an Oregon Democrat, said in a Wednesday letter to Senate leaders that his office discovered that “at least one major technology company” has warned an unspecified number of senators and aides that their personal accounts were “targeted by foreign government hackers.” Similar methods were employed by Russian military agents who used them to influence the 2016 elections. Wyden did not specify the timing of the notifications, but a Senate staffer said they occurred “in the last few weeks or months.” The aide spoke on condition of anonymity because he was not authorized to discuss the issue publicly. But the senator said the Office of the Sergeant at Arms , which oversees Senate security, informed legislators and staffers that it has no authority to help secure personal, rather than official, accounts.