They have stolen bitcoins from my official Bitcoin wallet

[ed_war_d]

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

[helloeverybody]

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

Someone with physical access to your machines?  Or wouldn't be the first time

[Cs87kxy]

but you can't check if click some waste link about download of some java script or php code that can record your action in this pc?
have you tried to scan you computer with another Anti virus? It should be a better way to check if it is clean!

[Mickeyb]

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

You had quite a considerable amount. Have you ever revealed how many bitcoins you have publicly, on any forum for example? This would make you a much easier target. Hackers would be able to target you by your IP address.

The truth of the matter is that these Bitcoin targeting malwares are and will be more and more numerous in the future.

[ed_war_d]

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

Someone with physical access to your machines?  Or wouldn't be the first time

Nobody has offline access to my laptop and my desktop and nobody knows my passwords (they were different)

[Minecache]

Did you pirate Fallout 4?

http://mobile.geek.com/latest/258724-fallout-4-pirate-gets-instant-karma-when-his-bitcoins-are-stolen?origref=

[crazyivan]

Using cold storage and paper wallets is the only real protection. Also, some of online wallets offer insurance option, I like that too.

[Amph]

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

rootkit maybe? your system was already infected long time ago, and the hacker waited for a big amount? it is certainly possible

[Karartma1]

Who is they? By the tone of your message I think you should have never invested in Bitcoin. I'm sorry for your loss but if you know what you are doing your coins are 99% safe.
I'm sorry ed_war_d, no one is going to refund you.

[virtualx]

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

Was your wallet encrypted? Someone found your private key, this is the only way to make transactions on the blockchain. guessing a bitcoin private key is impossible. The question is how the attacker found the key. I think the computer has a rookit or trojan.

[ranochigo]

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

You had quite a considerable amount. Have you ever revealed how many bitcoins you have publicly, on any forum for example? This would make you a much easier target. Hackers would be able to target you by your IP address.

The truth of the matter is that these Bitcoin targeting malwares are and will be more and more numerous in the future.

As long as you don't port forward everything, there is no risk of you getting attack by your IP address. Vulnerabilities may be possible but I haven't heard of any for Windows that is this critical.

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

rootkit maybe? your system was already infected long time ago, and the hacker waited for a big amount? it is certainly possible

Certainly what I'm thinking too. The hacker might have gained control of the private key and run checks every x minutes to transfer the Bitcoins.

-snip-
Was your wallet encrypted? Someone found your private key, this is the only way to make transactions on the blockchain. guessing a bitcoin private key is impossible. The question is how the attacker found the key. I think the computer has a rookit or trojan.

They have stolen bitcoins from my official Bitcoin wallet.
Wallet had the password (about 30 characters)
Last time I've entered the password at least 6 months ago.
-snip-

Time to read the topic.

[ed_war_d]

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

You had quite a considerable amount. Have you ever revealed how many bitcoins you have publicly, on any forum for example? This would make you a much easier target. Hackers would be able to target you by your IP address.

The truth of the matter is that these Bitcoin targeting malwares are and will be more and more numerous in the future.

As long as you don't port forward everything, there is no risk of you getting attack by your IP address. Vulnerabilities may be possible but I haven't heard of any for Windows that is this critical.

it is best to avoid windows 10 right now, but i don't think this is the case, of the first hacking attempt from microsoft, so it most likely that you were infected

you visited a shady website or probably downloaded something malicious, in other words it's your fault

What about the passwords?
I've never entered them on Windows 10

rootkit maybe? your system was already infected long time ago, and the hacker waited for a big amount? it is certainly possible

Certainly what I'm thinking too. The hacker might have gained control of the private key and run checks every x minutes to transfer the Bitcoins.

-snip-
Was your wallet encrypted? Someone found your private key, this is the only way to make transactions on the blockchain. guessing a bitcoin private key is impossible. The question is how the attacker found the key. I think the computer has a rookit or trojan.

They have stolen bitcoins from my official Bitcoin wallet.
Wallet had the password (about 30 characters)
Last time I've entered the password at least 6 months ago.
-snip-

Time to read the topic.

I've made clean installation of Windows 2-3 times since I've entered the passwords last time.
I hope the  investigation of this case can improve the Bitcoin world and can prevent such incidents in future

[bob123]

I've made clean installation of Windows 2-3 times since I've entered the passwords last time.
I hope the  investigation of this case can improve the Bitcoin world and can prevent such incidents in future

Did u use any external devices (usb) which were used on the (maybe) compromised system after the clean installation?
Or did you only use new usb sticks / no at all?

If your going to get BTC again.. get a hardware wallet and initalize it on a linux distrib.

[bitowl]

Using windows was your down fall imo.

[rebuilder]

I've made clean installation of Windows 2-3 times since I've entered the passwords last time.
I hope the  investigation of this case can improve the Bitcoin world and can prevent such incidents in future

Did you transfer any BTC to any address controlled by the private keys in question before this? Or was this the first time you sent BTC to this wallet?

If it was the first time actually using that wallet, it seems likely your private keys were already compromised before you reinstalled your OS. So how secure was your setup before you installed Windows 10? Were you using that laptop for anything other than running a Bitcoin client? When you first installed the client, how confident can you be your system was clean at that time?

[yoona]

first of all i am sorry for the lost. but did anybody here asked op to sign a message to prove the ownership of the address? it's important right to claim that the address is really owned by op. and after that we can go discussing this . no offense op okay 

[shorena]

-snip-
I've made clean installation of Windows 2-3 times since I've entered the passwords last time.
I hope the  investigation of this case can improve the Bitcoin world and can prevent such incidents in future

How did you store the password for the wallet?

first of all i am sorry for the lost. but did anybody here asked op to sign a message to prove the ownership of the address? it's important right to claim that the address is really owned by op. and after that we can go discussing this . no offense op okay 

No, why? They can hardly reclaim the coins with a signed message. I dont see how that matters at all.

[ed_war_d]

I've made clean installation of Windows 2-3 times since I've entered the passwords last time.
I hope the  investigation of this case can improve the Bitcoin world and can prevent such incidents in future

Did you transfer any BTC to any address controlled by the private keys in question before this? Or was this the first time you sent BTC to this wallet?

If it was the first time actually using that wallet, it seems likely your private keys were already compromised before you reinstalled your OS. So how secure was your setup before you installed Windows 10? Were you using that laptop for anything other than running a Bitcoin client? When you first installed the client, how confident can you be your system was clean at that time?

I had the 1st wallet. Then when the sum of bitcoins was pretty big I've made the new one (about 3 years ago). I've transfered the bitcoins to the new wallet 1 time and keep them there. For the new bitcoins I've used the new wallet.

[mexxer-2]

first of all i am sorry for the lost. but did anybody here asked op to sign a message to prove the ownership of the address? it's important right to claim that the address is really owned by op. and after that we can go discussing this . no offense op okay 

No, why? They can hardly reclaim the coins with a signed message. I dont see how that matters at all.

I think he means to say that we should first actually get some proof that OP's wallet was indeed hacked and he is not just wasting everyone's time with wild speculation as to how his wallet might've been hacked

[ed_war_d]

first of all i am sorry for the lost. but did anybody here asked op to sign a message to prove the ownership of the address? it's important right to claim that the address is really owned by op. and after that we can go discussing this . no offense op okay 

No, why? They can hardly reclaim the coins with a signed message. I dont see how that matters at all.

I think he means to say that we should first actually get some proof that OP's wallet was indeed hacked and he is not just wasting everyone's time with wild speculation as to how his wallet might've been hacked

I've not understood you pretty well. English is not my native language