Where we live this is a daily event in each town, secured behind burglar bars, they will try come through the roof. Live on the 5th floor is not safe enough, they climb up drain pipes too.

Alarm systems we installed (since we did not like the idea of security company alarm systems) we use remote battery option, expensive but well worth while.

Planting thorns bushes, cactus or similar around the perimeters and under windows to make it a bit more difficult, as mentioned by @practicalthought

Lighting only works when you have electricity (ours goes off quite regularly), we have lighting everywhere, leads one back to using motion sensor battery operated systems being the best.

Always have someone in the home if possible, house sitting.