Since public registers are public, people can find bugs on them and exploit it for give their accounts GM permissions. Make your own register or register the accounts by hand.
I would also recommend you to close GlobalManager ports so you can only use SMC locally. There are many guides about how to protect your server. Check them out.
[HACKED]Sony hacked again - 93,000 accounts compromised with brute-force attack 10/20/2011 - User Submitted News - 38 Replies Hallo leute.
Leider auf einglish.
Sony wurde erneut durch eine Brutforce attacke gehackt.
http://4.bp.blogspot.com/-lt_f6xgP5Ls/TpWILcdVo5I /AAAAAAAADHk/9Szq7hva_CQ/s640/Untitled.jpg
Sony has warned users against a massive bruteforce attack against PlayStation and Sony network accounts. The attack – which used password and user ID combinations from an unidentified third-party source – succeeded in compromising 60,000 PlayStation Network and 33,000 Sony Online Entertainment network...