"I downloaded a 1.2GB 'MK11 zip' from mediafire. After installing, my phone showed ads every 30 seconds. Had to factory reset." – u/AndroidGamer92

As Softonic's security scan notes, many third-party APK files are flagged as "potentially malicious" or containing unwanted bundled software. While some flags may be false positives, the risk is substantial. Downloading from unofficial sources can lead to: