JUST IN: DHS Secretary Markwayne Mullin says there is no known connection between Microsoft and the nationwide flight ground stop, while officials continue inve

JUST IN: DHS Secretary Markwayne Mullin says there is no known connection between Microsoft and the nationwide flight ground stop, while officials continue investigating whether a cyberattack played a role. “So far, what we’ve seen, there is actually no, cyber attack,” Mullin says. The remarks com…