<p>One of the transactions was rejected by blockchain.info and one got through.</p>

<p>There was a "malleability attack" going on just recently, that's probably the reason.  The attacker can take legitimate transactions, change the transaction ID (hash) and republish the transaction to the network.  See more at <a href="https://en.bitcoin.it/wiki/Transaction_Malleability" rel="nofollow">https://en.bitcoin.it/wiki/Transaction_Malleability</a> - there is a BIP 62 in the pipeline dealing with this problem.</p>

<p>The attack is merely an annoyance, the recipient will never get twice the amount (800 mBTC in your case) through a malleability attack.</p>

CC BY-SA 3.0
2015-10-10T15:15:38.877Z
2015-11-09T16:28:41.180Z
2015-11-09T16:28:41.180Z
tobixen
<p>i sent 0.4 btc to exchanger 
and this transaction was sent 2 times from my wallet and spent to me 200$ (0.8 btc)
which i wanted only 0.4btc to send
transaction hash:
<a href="https://blockchain.info/address/15o8CfP4z8cWiZCp5euzNEqXjEFTyNF5Yb" rel="nofollow">https://blockchain.info/address/15o8CfP4z8cWiZCp5euzNEqXjEFTyNF5Yb</a>
funds are still missing from my blockchain wallet more than hour ago
and at this transaction at other place when clicking on "hash" i see:
" A conflicting transaction has been detected in our memory pool. The transaction hash displayed below may change. "
<a href="https://blockchain.info/tx/f3cf0d91fd678de0bbbf13aa69e87ab3c0e7c55c3aecb03c06ac78d5139fc2b6" rel="nofollow">https://blockchain.info/tx/f3cf0d91fd678de0bbbf13aa69e87ab3c0e7c55c3aecb03c06ac78d5139fc2b6</a></p>

<p>so my funds are gone now? or will they come back</p>

<transactions><blockchain.info>
this bitcoin address contains transactions which may be double spends. You should be extremely careful
ertel pat
# this bitcoin address contains transactions which may be double spends. You should be extremely careful

(Asked by: username_0 on 2015-10-09)

i sent 0.4 btc to exchanger
and this transaction was sent 2 times from my wallet and spent to me 200$ (0.8 btc)
which i wanted only 0.4btc to send
transaction hash:
<https://blockchain.info/address/15o8CfP4z8cWiZCp5euzNEqXjEFTyNF5Yb>
funds are still missing from my blockchain wallet more than hour ago
and at this transaction at other place when clicking on "hash" i see:
" A conflicting transaction has been detected in our memory pool. The transaction hash displayed below may change. "
<https://blockchain.info/tx/f3cf0d91fd678de0bbbf13aa69e87ab3c0e7c55c3aecb03c06ac78d5139fc2b6>

so my funds are gone now? or will they come back

**Tags:** transactions, blockchain.info


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## 1 answers

### Answer by username_1 on 2015-10-10. Score: 1

One of the transactions was rejected by blockchain.info and one got through.

There was a "malleability attack" going on just recently, that's probably the reason. The attacker can take legitimate transactions, change the transaction ID (hash) and republish the transaction to the network. See more at <https://en.bitcoin.it/wiki/Transaction_Malleability> - there is a BIP 62 in the pipeline dealing with this problem.

The attack is merely an annoyance, the recipient will never get twice the amount (800 mBTC in your case) through a malleability attack.


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