STOLEN BITCOINS - Armory created additional address

[ask]

Hi

Today I wanted to send 1 bitcoin from my Armory account to online Blockchain account. Transaction was signed, but unfortunatelly I found that additional 9 BTS were sent to unknown address.

Does someone know what were wrong? 

[Prefinem]

9 Satoshis? or 9 BTC?

If it was Satoshis, probably a transaction fee.

[roflplatypus]

that sounds like your change address - once the output was made, the wallet generates a new address to send the extra coins to.

[ask]

No address was changed - 9 BTC!

[Prefinem]

That is extremely strange.  Did you contact the Armory about it?

[SgtSpike]

That would be your change address:  https://en.bitcoin.it/wiki/Change

[ZephramC]

No address was changed - 9 BTC!

If those 9 BTC are exactly the remainder. (Eg. you had 10 BTC in your Armory, you sent 1 BTC to some addres, then those (remaining) 9 BTC were returned as "change = small coins" to you.) Those new addres with 9 BTC should be under your control. What does Armory balance say to you? If it is 9 BTC then you are ok.
If you are unsure, post that "new" BTC addres here and we can check the transaction in blockchain.