So even if the account is compromised, the hacker, cannot increase the limit, without the "key phrase"
This provider, should also, not have control over your private key. ^Grin^
When the account is compromised, you can simply, sweep the remaining coins to another address or cold storage, to protect it. ^Smile^
Yeah, pretty sure Armory has those functions. They're (debatedly) the #1 secure bitcoin wallet out there