Every junior dev thinks they've invented encryption when they discover Base64. The number of times I've had to explain that encoding ≠encryption is probably why my hair's thinning. Base64 is just fancy dress for your data – anyone can undress it with zero effort. It's like hiding your house key under the doormat and calling it a security system.
And the response is always the same: "Fine! I'll just use Base128 then!" Sure buddy, throw more digits at the problem. That'll fix it. Just like how writing your password in bigger letters makes it more secure.