Cryptocoin

• In essence, it is cool.
• Offline/cold storage is great.
• But when you connect local network to intranet, there is some process of deciding whether those joining the bigger network are valid. This process involves ballots. AFAIK if 51% of the voters agree on those who joined (and their coins) are valid, then it is decided as valid. But what if a bigger mass joins the network to disrupt and poison the 51% ?