The official Play Store version receives security patches and bug fixes. A Mod APK will never update automatically. Over time, your phone becomes vulnerable to new exploits that the official version would have fixed.
Sometimes. But many premium Android antivirus apps (like Bitdefender, Kaspersky) will flag modded APKs as "Potentially Unwanted Programs" (PUP) or riskware. However, zero-day malware may not be detected for weeks. usb lockit mod apk
This is the most critical section of this article. While the promise of a free, premium security app is tempting, downloading a Mod APK for a is one of the most dangerous things you can do. The official Play Store version receives security patches