security window issues? try these
window wedgei have em on all my windows, especially great when you have a window AC (i mean they could just lift up the window and enter, wtf! The velcro might look silly, but it's also a good way to install something w/o drilling holes into the frame (landlord issues). You only need 1 per window. It feels pretty impossible to HULK your way opening this window w/o basically breaking the glass.
Think about installing new screws too if you want your door to protect you. Most doors are screwed in w/ 2in screws (door jamb/bolt) which only really just does the door jamb, the 3in screws will get you into the frame/stud at least.