i bet some hacker will get around that 7 days or make new alike cuz nothing is unhackable
why are hackers so big of a deal thats like u cannot implement autoban system i bet sime hacker will get around this stupid 7 days thing
"Nothing is unhackable" no, nothing is, but this particular thing is pretty damn hard.
It's all server-side; your wii could be set to any date or time, and wiimmfi will not care. It simply adds 7 days to the current time, and says "right that's when you're activated". Until time reaches that point, it's going to not let you on. [The exact method this works on Wiimmfi's side is unknown to me - I'm an educated guesser not someone with access to Wiimmfi's code]
To get to that database, you'd somehow have to find a hole in WHB's VPS, and get in, and successfully find the wiimmfi credentials for the database, and then get permanently banned and potentially reported to the police because your Wii has been activated early and the IP that did the MySQL edit also SSH'ed in like a minute or so before, leaving very obvious tracks about what you do.