WPA is WiFi Protected Access - it's the most common method of encryption used to secure a wireless network. If you have a laptop or smartphone and you're trying to connect to a WiFi network, you'll usually need to enter a WPA key (or password) in order to connect to it.
In the live-action adaptations by Sir Peter Jackson, Sauron is portrayed by Benedict Cumberbatch in The Hobbit trilogy (who also portrays Smaug in the same trilogy) and was played by Sala Baker and voiced by Alan Howard in The Lord of the Rings trilogy.
The same year, he also starred in the fourth film in the Bourne franchise, The Bourne Legacy, which was written and directed by Tony Gilroy. Renner played a new lead character, Aaron Cross, in place of Jason Bourne, who was played by Matt Damon in the first three films. Renner has expressed interest in doing a Bourne film with Damon in the future, stating that [it] would be kick-ass. I love Matt.