Nobody knows what "Ks" stands for. Nobody knows who compiled the "99." But the "v2" implies something crucial: someone, or something, looked at version one and decided it needed to be fixed.
: Check the digital fingerprint (SHA-256) of the file. If you found the file on a forum, users may have posted the correct hash to compare against. Ks99v2.apk
You are left staring at a piece of glass and silicon, wondering if you ever truly owned it, or if, for a few days, it belonged to Ks99v2. Nobody knows what "Ks" stands for