To avoid this situation from happening, we can take the following measures:
1. Be cautious when downloading applications. Do not download software installation packages from unreliable sources, and it's best to download from official channels or app stores.
Before installing software, check the software's permissions. Only grant the minimum necessary permissions, such as not authorizing access to contacts and text messages if not needed.
3. Do not arbitrarily open or download unknown attachments and programs.
4. Always keep your security software and antivirus software up to date.