Board Thread:General Discussion/@comment-125.1.59.229-20141026184338/@comment-24980562-20141030203858

Devs ban people who use macros, bots, are abuse game mechanics like refresh spamming (in PvP, after resources nodes, when sent to the wrong node, etc.), use multiple accounts (this is why a VPN can be so dangerous; everyone is technically using the same IP, which for the devs looks like someone is using multiple accounts), and so on. This applies to Japanese and foreign players alike. Just playing the game won't get you banned. The devs have said several times that they don't mind foreigners playing the game, they only care about cheaters and bots, no matter what nationality. And the cookie method is safe because of reasons that Dragonjet has summed up perfectly.