BlackMart Alpha is completely safe to use for your Android device as well as for your privacy. The only issue is that the applications of BlackMart for Android apk are not testified and verified before uploading that may cause privacy issues. If you don't want any security issues then you should use the Google Play Store instead of the BlackMart apk. This type of app store may cause problems in your device due to its Dodge and virus-infected apps which will become harmful for your Safety because its applications are not verified.