Xetron Corporation, whose products range from military sensors to communications systems to information security software, shows up in nearly 400 documents published earlier this month by WikiLeaks. Those documents describe some of the tools the CIA uses to hack phones, smart TVs, and other digital products to conduct espionage overseas — and some of the partners that help them do it, like Xetron.

Now Xetron employees are facing additional scrutiny in the wake of the WikiLeaks dump, according to one source familiar with the matter, with some of them suddenly pulled in to polygraph examinations. It's unclear if the government is conducting an active investigation into the company as a potential source of the leaks or if the firm is simply responding to stepped-up security requirements on some of its projects.

According to the source, it typically takes months for contractors to schedule the polygraph examinations required on certain sensitive government contracts — sometimes up to a year. "But if it was really important for a mission it would happen immediately … or [if there's] concern about the project," the person said. Another source familiar with Xetron's operations said being suddenly asked to sit for a polygraph in the context of normal project requirements is unusual. The sources requested anonymity to preserve their employability in the buttoned-up world of defense contracting.