When you install a patched APK, you are installing code that has been tampered with. You are trusting the "Jertech" modifier not to have inserted malware, spyware, or keyloggers. Since these apps often require Accessibility Services or Overlay Permissions to simulate mouse clicks, they have extensive control over your device. A malicious patch could theoretically steal passwords or track screen activity.
Prior versions of the Jertech mouse application contained underlying code vulnerabilities that exposed users to potential exploits. jertech mouse app patched