The week ahead: Mueller in the spotlight on Russia; senators move on 5G security

A Senate panel this week addresses security of fifth-generation wireless networks while lawmakers finally get their chance to question former special counsel Robert Mueller about his probe into Russia's cyber-enabled efforts to undermine the 2016 elections, a session likely to underscore ongoing cybersecurity policy challenges amid the partisan fireworks.

And the Senate Armed Services Committee is slated to receive a closed-door briefing Tuesday from Defense Department officials on cyber operations, but it's unclear if a similar session will be scheduled...