To secure your home security system from cyber attacks, here is a list of suggested items:
Change passwords regularly and ensure they are strong and not easy to guess
Regularly update firmware and install security patches
Ensure all devices are connected to the same secure network
Back up data regularly onto an external drive
Enable two-factor authentication for an extra layer of security
Configure all devices with an appropriate level of access restriction
Invest in security software and services such as firewalls, anti-malware, and intrusion detection and prevention systems