Harbour is the 10th player to join James Franklin's Class of 2024.
The women's team moved up four spots in this week's Inside Lacrosse rankings.
Between producing six quarterback hurries, five sacks, and one interception, Manny Diaz's defense stole the show at Blue-White.
Presumptive quarterback starter Drew Allar finished the matchup with 202 yards through the air on a 63% completion rate.
"The offensive line room has made some great strides. We've got to keep improving, but I think we're in a great spot right now."
The Nittany Lions took care of George Mason in a dominant sweep on the road Friday night.