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1  Bitcoin / Bitcoin Discussion / Re: Possibly Hacked on: February 19, 2016, 03:34:04 AM
........
So when I set up coinbase to automatically sell $200 worth of bitcoins once a month, and it does it without me logging in, how exactly is it doing this?

No I haven't configured it to do this, but I can.

I don't know how all the web wallets work, but with coinbase only the coins you have in their so-called "vault" require some type of pass phrase to unlock. The normal account, the private keys are not tied to your login password or a passphrase.

I don't use their vault, I use cold addresses instead for similar purpose, so all my currency at coinbase (which I keep small) could be spent by someone who got into my account - though large amounts or several small amounts trigger 2FA but single small amounts don't (mainly because I don't need it to, I keep less than 1 BTC there)

web wallets are different from each other. a service like coinbase is something like what you said. (I don't know if they have the auto pay option) but assuming you set such option they deduct the amount from your "account" not bitcoin address. in wallets like coinbase AFAIK you don't have access to a single bitcoin address/private key they have all the access and you only have an account.

but other web wallets like Blockchain.info is different. they don't have any access to your funds/private keys the wallet is created in your browser, encrypted in your browser, decrypted in there too and they are only keeping an encrypted version of it on their servers with no access to your funds whatsoever.
this is what people usually don't know about these services.

The OP never said they were taken from a private address he controlled.

To clear some of this up.. It was not a web wallet

is it a "brain wallet"

tell us what program it is..

core-qt? electrum?

perhaps you downloaded it from a phishing site.. not all wallets are legit and you should only download them from the source.



It's called MultipBit HD. Downloaded from the official site
2  Bitcoin / Bitcoin Discussion / Re: Possibly Hacked on: February 19, 2016, 12:39:27 AM
........
So when I set up coinbase to automatically sell $200 worth of bitcoins once a month, and it does it without me logging in, how exactly is it doing this?

No I haven't configured it to do this, but I can.

I don't know how all the web wallets work, but with coinbase only the coins you have in their so-called "vault" require some type of pass phrase to unlock. The normal account, the private keys are not tied to your login password or a passphrase.

I don't use their vault, I use cold addresses instead for similar purpose, so all my currency at coinbase (which I keep small) could be spent by someone who got into my account - though large amounts or several small amounts trigger 2FA but single small amounts don't (mainly because I don't need it to, I keep less than 1 BTC there)

web wallets are different from each other. a service like coinbase is something like what you said. (I don't know if they have the auto pay option) but assuming you set such option they deduct the amount from your "account" not bitcoin address. in wallets like coinbase AFAIK you don't have access to a single bitcoin address/private key they have all the access and you only have an account.

but other web wallets like Blockchain.info is different. they don't have any access to your funds/private keys the wallet is created in your browser, encrypted in your browser, decrypted in there too and they are only keeping an encrypted version of it on their servers with no access to your funds whatsoever.
this is what people usually don't know about these services.

The OP never said they were taken from a private address he controlled.

To clear some of this up.. It was not a web wallet
3  Bitcoin / Bitcoin Discussion / Re: Possibly Hacked on: February 19, 2016, 12:29:50 AM
Honestly after lossing money 2 times like that I would consider that im getting hacked, I would remove your entire hard disk and install an OS from scratch, if you use windows don't forget that it's useless unless you install a firewall and decent av and anti malware at least.

I'm currently running windows 7 professional. I use my internal hard drive as well as an external 2tb hard drive. Would you suggest that I wipe both?
4  Bitcoin / Bitcoin Discussion / Possibly Hacked on: February 18, 2016, 02:03:23 AM
So I've only had my wallet for a couple months, casually buying and selling bitcoins.
About a month ago I mysteriously lost about $30 USD, it said that I'd sent the coins the night before but I didn't remember doing that.
I just passed it off as me being tired and making a transaction I didn't remember.
Well it happened again, with the same amount, and I'm pissed off.
If anyone can give me advice on what to do in this situation please help
On another note, the blockchain address said the coins were sent to the middle of the Gulf of Guinea. Yeah, definitely wasn't me....

https://blockchain.info/tx-index/1e75ffea8e1d8a22696d32c7ddbd373a8c5212c4656fb755e65d6b694f3566da?show_adv=true
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