Encrypted Bloon

The Encrypted Bloon is a bloon with 1 HP. However, it has encryption locks, the first one needs a 128-bit encryption key, the next one twice as much, the third one twice as much again and so on up to four encryption locks, only then you can damage the bloon directly. These bloons release nothing after death. There is also a 10% chance of a Password.exploit to be released after popping these.

The only way to damage it is using the Hacker to decrypt this bloon.