The absolute best plant to keep people away is the Gypmie.

https://g.co/kgs/eqP4rA

Try supergluing the jealousies in place, they would have to break the window to get in. One of the homes in my neighbourhood was broken into a couple weekends ago. The resident is HPD, they got his firearm. He has Jealousies although the house. I told him I paid 70 bucks for my windows, and I bought a couple of windows at a time and installed them myself until they were all changed. If you stay with Jealousies you will always be a target. To not change them out (especially if you are the homeowner) is just setting you up for a big surprise!, They can just lay a jacket over the plant.