Yep, no password, weak password or he gave out his password and his wireless is compromised.
On the other hand …
I’m starting to lean toward “on the other hand.”
Methinks the lady doth protest... too much.
Nah - if he was using internet explorer it’s possible to get a server installed on your PC through infected ads. (Though you generally have to be going to questionable websites to get that level of infection to begin with)
Once the server is there they can order your PC to pull down whatever they want.
Or open WiFi.
But you’d think a Nobel peace prize perfessor would have better smarts.