You can find some home security tips in this blog. You are encouraged to be alert and secure your house from unauthorized entry. Since maintaining a CCTV camera is costly, you can install a peephole on your door to check the person ringing the bell before you open it.
We used to open the door to create a narrow space to see the person on the other side, however, they can still go inside our house if they would use force to push the door. There are sophisticated peepholes that have wider scope of visibility, some do not require you to press your eyes, and some are even appropriate to your kids. Unless you take preventive and corrective measures, you will never address the risk in your house. Reminder, also keep yourself safe from hi tech pickpocketing when you go out.
