Thriller Protagonists

I have decided to research further into the main characters or protagonists in Thriller films. This role is usually taken on by a male, showing that men are the best for handling situations which they are usually faced with in Thriler films. It is rare for us to see a woman take on this role. Personally, I feel that there should be more Thrillers which feature a female as the protagonist to show how the story would develop differently and how the outcome would differ.
Female actresses who have taken roles in Thriller films are:

Jodie Foster-Flightplan


Katherine Heigl-Zyzzyx Road



Halle Berry- Perfect Stranger



I found it hard to find even these. So i have therefore come to the conclusion that it is most common for males to play the protagonist in thriller films.

Protagonist-The main character in a play around whom most of the action is based.(http://www.dramatic.com.au/glossary/glossaryp_z.htm)
Antagonist-Any force in the story in conflict with the protagonist. It may be a person, the physical or social environment, a destructive element in the protagonist’s own nature.(http://faculty.weber.edu/dkrantz/en2500/Shortstoryvocab.htm)