My wallet is stolen! (10 BTC)

[chaosPT]

May be you entered some site and some one remote your computer .

[Lauda]

It is not an offline wallet (cold storage) if it was created on a computer connected to the internet.

Well that is rather easy to hack then, isn't it.
I just ask myself how do they find these individuals holding a decent sum of coins.

[ArticMine]

Before ever making a cold storage wallet, scan your pc thoroughly, use up2date antivirus, and also scan with Hitman Pro after that.

Or just use an Linux OS, no need to mess about with any of that nonsense.

PHD Candidate Bitcoin researcher had ~9000 BTC stolen while he was using Linux. CDecker on this forum. https://bitcointalk.org/index.php?action=profile;u=49

Notice his user number is 49 too. Hell he could even be Satoshi(probably not though).

Link to post where this loss occurred please! Was he using an encrypted wallet? Were encrypted wallets even available at the time? Using GNU/Linux with an encrypted wallet will drastically reduce by many orders of magnitude  the threat of Bitvoin theft.

[Buffer Overflow]

It is not an offline wallet (cold storage) if it was created on a computer connected to the internet.

Well that is rather easy to hack then, isn't it.
I just ask myself how do they find these individuals holding a decent sum of coins.

My guess is people who are running bitcoin nodes are targeted. A list of current nodes is trivial to obtain. It makes sense that the probability is greater that these machines could contain coins rather than just selecting a machine at random.

[juju]

It is not an offline wallet (cold storage) if it was created on a computer connected to the internet.

Well that is rather easy to hack then, isn't it.
I just ask myself how do they find these individuals holding a decent sum of coins.

My guess is people who are running bitcoin nodes are targeted. A list of current nodes is trivial to obtain. It makes sense that the probability is greater that these machines could contain coins rather than just selecting a machine at random.

This and like Gavin said recently, you should assume your IP is associated your transactions. If this is the case then anyone with a significant amount of coins could be targeted when they broadcast transactions to the network with an address that holds alot of coins.

[Buffer Overflow]

It is not an offline wallet (cold storage) if it was created on a computer connected to the internet.

Well that is rather easy to hack then, isn't it.
I just ask myself how do they find these individuals holding a decent sum of coins.

My guess is people who are running bitcoin nodes are targeted. A list of current nodes is trivial to obtain. It makes sense that the probability is greater that these machines could contain coins rather than just selecting a machine at random.

This and like Gavin said recently, you should assume your IP is associated your transactions. If this is the case then anyone with a significant amount of coins could be targeted when they broadcast transactions to the network with an address that holds alot of coins.

Luckily it trivial to hide your IP during transmission of a transaction. Simply go here using TOR : https://blockchain.info/pushtx and post the hex of your signed transaction.

[juju]

It is not an offline wallet (cold storage) if it was created on a computer connected to the internet.

Well that is rather easy to hack then, isn't it.
I just ask myself how do they find these individuals holding a decent sum of coins.

My guess is people who are running bitcoin nodes are targeted. A list of current nodes is trivial to obtain. It makes sense that the probability is greater that these machines could contain coins rather than just selecting a machine at random.

This and like Gavin said recently, you should assume your IP is associated your transactions. If this is the case then anyone with a significant amount of coins could be targeted when they broadcast transactions to the network with an address that holds alot of coins.

Luckily it trivial to hide your IP during transmission of a transaction. Simply go here using TOR : https://blockchain.info/pushtx and post the hex of your signed transaction.

That is actually really cool, I did not know you could just paste a signed TX into Blockchain.info. Thank-you for sharing this URL!

[Buffer Overflow]

It is not an offline wallet (cold storage) if it was created on a computer connected to the internet.

Well that is rather easy to hack then, isn't it.
I just ask myself how do they find these individuals holding a decent sum of coins.

My guess is people who are running bitcoin nodes are targeted. A list of current nodes is trivial to obtain. It makes sense that the probability is greater that these machines could contain coins rather than just selecting a machine at random.

This and like Gavin said recently, you should assume your IP is associated your transactions. If this is the case then anyone with a significant amount of coins could be targeted when they broadcast transactions to the network with an address that holds alot of coins.

Luckily it trivial to hide your IP during transmission of a transaction. Simply go here using TOR : https://blockchain.info/pushtx and post the hex of your signed transaction.

That is actually really cool, I did not know you could just paste a signed TX into Blockchain.info. Thank-you for sharing this URL!

Yes. They then just transmit it using their node.

[knifeedge]

Today I saw that my offline wallet is empty. 
Someone has transferred all my 10 BTC. 

Sorry for your lost. I think it's happened because of malicious software (like trojans). 

[spazzdla]

This thread makes me nervious... I created a.... offlineish wallet...  It is currently offline but.. this is what I did..

New hard drive, install windows, install BTC-QT, encrypt, send BTC to wallet, back up wallet to many USB's remove hard drive.

Odds of me getting screwed are..?!

Your wallet.dat file is still sitting on your computer in the roaming app data folder of Bitcoin Core.   That is what everyone is referring to as the wallet still being online...

The hard drive isn't on a computer.. it's in my safety deposit box in the bank..  I forgot to tell that step.. oops..

[heisenberg19]

omg, I'm very sorry for your 10BTC

[findftp]

Shit man, not fun to lose that many bitcoins.

People think Bitcoin Core is an offline wallet, it's not when your pc is connected to the internet.

Before ever making a cold storage wallet, scan your pc thoroughly, use up2date antivirus, and also scan with Hitman Pro after that.

You should be fine after that to make a cold storage wallet.

No you're not.
Then you are in even greater trouble because you think it's safe

[findftp]

It is not an offline wallet (cold storage) if it was created on a computer connected to the internet.

Well that is rather easy to hack then, isn't it.
I just ask myself how do they find these individuals holding a decent sum of coins.

My guess is people who are running bitcoin nodes are targeted. A list of current nodes is trivial to obtain. It makes sense that the probability is greater that these machines could contain coins rather than just selecting a machine at random.

This and like Gavin said recently, you should assume your IP is associated your transactions. If this is the case then anyone with a significant amount of coins could be targeted when they broadcast transactions to the network with an address that holds alot of coins.

Luckily it trivial to hide your IP during transmission of a transaction. Simply go here using TOR : https://blockchain.info/pushtx and post the hex of your signed transaction.

That is actually really cool, I did not know you could just paste a signed TX into Blockchain.info. Thank-you for sharing this URL!

Very cool, but vulnerable for man in the middle attack.

[DeathAndTaxes]

Very cool, but vulnerable for man in the middle attack.

How? What exactly could an attacker do if they gained a signed transaction?  Any bitcoin node broadcasts signed transactions to random strangers.

[wolfYella]

It is not an offline wallet (cold storage) if it was created on a computer connected to the internet.

Well that is rather easy to hack then, isn't it.
I just ask myself how do they find these individuals holding a decent sum of coins.

My guess is people who are running bitcoin nodes are targeted. A list of current nodes is trivial to obtain. It makes sense that the probability is greater that these machines could contain coins rather than just selecting a machine at random.

This and like Gavin said recently, you should assume your IP is associated your transactions. If this is the case then anyone with a significant amount of coins could be targeted when they broadcast transactions to the network with an address that holds alot of coins.

Luckily it trivial to hide your IP during transmission of a transaction. Simply go here using TOR : https://blockchain.info/pushtx and post the hex of your signed transaction.

That is actually really cool, I did not know you could just paste a signed TX into Blockchain.info. Thank-you for sharing this URL!

Very cool, but vulnerable for man in the middle attack.

All you could do is prevent the TX from being transmitted as if you altered the TX in any way then the signature would no longer match, making it invalid.

[Dread Pirate Roberts]

maybe next better you put your money in bitstamp or anything because a lot people put money there and i think it will more save than you save alone .

sorry to hear this . but patience and i hopes you got the thief !
dont leave keep moving !

[deluxeCITY]

maybe next better you put your money in bitstamp or anything because a lot people put money there and i think it will more save than you save alone .

sorry to hear this . but patience and i hopes you got the thief !
dont leave keep moving !

This would open up the OP for a whole new set of possible attacks.

IMO the OP should do a better job of securing his computer

[williamj2543]

You are screwed for sure. Bitcoin is very scary because you can lose it instantly and have no way of getting it back. Never use simple passwords. What I do is type something random and encrypt it into a sha256 string and just use that as a password, written down on a piece of paper on my desk.

[btcxyzzz]

Feel sorry for you, and I always reply like this: install Linux, serious operating system. Windows is a toy for housewifes.

[picolo]

You are screwed for sure. Bitcoin is very scary because you can lose it instantly and have no way of getting it back. Never use simple passwords. What I do is type something random and encrypt it into a sha256 string and just use that as a password, written down on a piece of paper on my desk.

It is a good way to have a secure password but you need to secure your piece of paper and a back up to this piece of paper as well and if you travel you need to take it with you if you want to be able to access your coins