The most popular smart phone operating systems are iOS, Android and HarmonyOS. Users can access their preferred apps through the official secure app stores such as Apple’s App Store, Google Play or Huawei AppGallery. Baseline security checks are carried out to ensure that the apps allowed into these stores are secure. However, there are instances when users may wish to download apps outside their official app store. These unofficial app stores are commonly referred to as third-party app stores. These are the common risks of using such third-party app stores