Woke up today and lost all my Bitcoins !

[GreenStox]

I`m sorry guys for your lose but its very important to keep a good security.

If you plan to hold larger sums of bitcoins, dont use an online wallet, you might never know what scammers lie around there.

So the best method to use is, an offline cold storage with encrypted hard disk, you can never stay safer than that 

Pretty much this. If you have large amounts to store (as in 5 or more BTC) then I'd look into a hardware wallet to save them on, like a Trezor. I haven't heard of a user's coins being stolen on a Trezor before.

I wasnt talking about hardware wallets.

I was talking about cold storage on offline PC with encrypted hard-disk.No virus,malware,spyware,keylogger or other BS can access the bitcoin because its not connected to the internet ,and you will use a clean USB stick to transfer the already signed transaction file to the broadcasting PC, so that no virus can access it.

Even if the scam-enforcement breaks into your house without warrant and seizes your PC, they still can't access your bitcoins only if they know the encryption key, which you should hide under a marked tree in your nearest forest.

That should be the best protection i know of... 

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[guitarplinker]

I`m sorry guys for your lose but its very important to keep a good security.

If you plan to hold larger sums of bitcoins, dont use an online wallet, you might never know what scammers lie around there.

So the best method to use is, an offline cold storage with encrypted hard disk, you can never stay safer than that 

Pretty much this. If you have large amounts to store (as in 5 or more BTC) then I'd look into a hardware wallet to save them on, like a Trezor. I haven't heard of a user's coins being stolen on a Trezor before.

I'm not super sure about Trezor yet. The website you need to use it appears to be something of a weak link, not necessarily for security but usability.

https://www.reddit.com/r/Bitcoin/comments/2rz30w/trezor_why_its_absolutely_not_ready_for_mass/

A Trezor can be used with Electrum as well, so users aren't tied down to MyTrezor anymore. IIRC the latest Electrum update for all OSes includes Trezor functionality.

I wasnt talking about hardware wallets.

I was talking about cold storage on offline PC with encrypted hard-disk.No virus,malware,spyware,keylogger or other BS can access the bitcoin because its not connected to the internet ,and you will use a clean USB stick to transfer the already signed transaction file to the broadcasting PC, so that no virus can access it.

Even if the scam-enforcement breaks into your house without warrant and seizes your PC, they still can't access your bitcoins only if they know the encryption key, which you should hide under a marked tree in your nearest forest.

That should be the best protection i know of... 

Well, to be fair, I think a hardware wallet would be cheaper than purchasing a used, older, dedicated machine to just signing transactions offline. But then there's the argument that an offline machine can be re-purposed too so I'll leave that there.

As for the password bit, a more secure method would be to use KeePass with a strong master password, and then generate a very long, random password with KeePass to encrypt your wallet with. Just be sure not to lose either your KeePass database, or your master password.

[GreenStox]

A Trezor can be used with Electrum as well, so users aren't tied down to MyTrezor anymore. IIRC the latest Electrum update for all OSes includes Trezor functionality.

I wont comment that i have no idea how trezor works.

Well, to be fair, I think a hardware wallet would be cheaper than purchasing a used, older, dedicated machine to just signing transactions offline. But then there's the argument that an offline machine can be re-purposed too so I'll leave that there.

As for the password bit, a more secure method would be to use KeePass with a strong master password, and then generate a very long, random password with KeePass to encrypt your wallet with. Just be sure not to lose either your KeePass database, or your master password.

Well it all depends on the level of security, i guess if you own less than 50 BTC you can go with Trezor or Ledger, however above that you seriously need something more static and "off the grid" of the all-seeing eye of Sauron lol

Armory has an option whereas you can split your backup in more than 1 pieces, so you split it in like 4 places, go to a nearby forest, make sure the zone is not used by campers and tourists, and bury the 4 different papers near trees that can be distinguished

If you own 1 billion $ worth of bitcoins then its not good to take chances...

[kolloh]

Additionally, it is probably a good idea to spread your btc balance across a few addresses instead of storing them all in one address. If for some reason, that private key was compromised, you wouldn't have all your eggs in one basket. Spreads the risk out at least a little bit. Of course that doesn't matter if they have access to the wallet.

[kepo07]

Additionally, it is probably a good idea to spread your btc balance across a few addresses instead of storing them all in one address. If for some reason, that private key was compromised, you wouldn't have all your eggs in one basket. Spreads the risk out at least a little bit. Of course that doesn't matter if they have access to the wallet.

The only few ways for it to be compromised is a weak RNG. If they are all generated the same way, all of them would likely also be compromised thus all of them will get hacked. Also, if you place all the address in the same wallet.dat, they can still be compromised by virus.

[cloud36649]

I firstly transferred 0.04 to an address on Mycelium and found out today that it got transfered to another address after 1 confirm. Secondly someone transferred my Bitcoins from both my wallets on my android phone 2.58187103 gambled them in the past 2 days and lost them all early morning to this address 1EdiKj78wUz6rFSmYQBTx9P165vEW27GiD. Can anyone help ? Thats all my Bitcoin gone in 3 days !

Try and find out as much information as you can about the address that the coins were sent to. I would look into the security of your devices: https://en.bitcoin.it/wiki/Securing_your_wallet

Very sorry to hear this!

[Slaxt]

Additionally, it is probably a good idea to spread your btc balance across a few addresses instead of storing them all in one address. If for some reason, that private key was compromised, you wouldn't have all your eggs in one basket. Spreads the risk out at least a little bit. Of course that doesn't matter if they have access to the wallet.

This is what i do and i have yet to have any problems across all my addresses luckily or because i keep on to my computer security either way i am yet to have any stolen thankfully.

Like you say it spreads the risk and you shouldn't lose them all plus you should have cold storage for anything over 5btc.

Not sure the op actually lost anything though are we.

[pooya87]

Additionally, it is probably a good idea to spread your btc balance across a few addresses instead of storing them all in one address. If for some reason, that private key was compromised, you wouldn't have all your eggs in one basket. Spreads the risk out at least a little bit. Of course that doesn't matter if they have access to the wallet.

this is a good suggestion. it is exactly what i currently am doing. i have one paper wallet and one offline electrum wallet which hold my btc investments. and i also am using blockchain.info for my in hand wallet which i can use anytime i want and it holds small amount.

[kepo07]

Additionally, it is probably a good idea to spread your btc balance across a few addresses instead of storing them all in one address. If for some reason, that private key was compromised, you wouldn't have all your eggs in one basket. Spreads the risk out at least a little bit. Of course that doesn't matter if they have access to the wallet.

this is a good suggestion. it is exactly what i currently am doing. i have one paper wallet and one offline electrum wallet which hold my btc investments. and i also am using blockchain.info for my in hand wallet which i can use anytime i want and it holds small amount.

After those hacking incidents, you are still holding it in blockchain.info? It is pretty insecure considering how serious they take their security for. Not to mention those frequent downtimes.

[rayhan]

does it mean using a wallet in android phone still do not safe from hacking though use mycelium? but how can it be?

[kepo07]

does it mean using a wallet in android phone still do not safe from hacking though use mycelium? but how can it be?

Yes. Android phones also have viruses that can be installed via 3rd party APK or a custom closed sourced rom.

[Amph]

i would suggest to store small amount on phone/tablet and other stuff like that, they are more vulnerable than a normal desktop pc, also spend them fast, don't store for too long on those device

and online wallet is a big no no for me, only exchange for trading are an exception, but even then just a small amount

[yummyransom]

I firstly transferred 0.04 to an address on Mycelium and found out today that it got transfered to another address after 1 confirm. Secondly someone transferred my Bitcoins from both my wallets on my android phone 2.58187103 gambled them in the past 2 days and lost them all early morning to this address 1EdiKj78wUz6rFSmYQBTx9P165vEW27GiD. Can anyone help ? Thats all my Bitcoin gone in 3 days !

How did it happen?

[lahm-44]

sorry for what you have lost...bitcoins are not comming back now they are irriversible ...anyways I think your private key is stolen in this type of case....how many of your friends or peoples on your surrounding are using bitcoin or did you have stored any paper backup or something on somewhere? if not then your wallet is gonna hacked but from my side hacking a wallet is much tough it is made well secured to not being hacked

[SirChiko]

Hahaha you fucking faggot told you that I would get you back. You stupid asshole leaving your router on default hahaha. You see i was thinking of making more and keeping it to myself but then I thought fuck you. I told you to stay away from my sister you fuck yard. Revenge is so sweet man. Your fucking Bitcoin bullshit is now all gone what you got your just a nerd like all this retards on this forum. Oh Yer your so clever can't figure out the address that I sent it too! Your favourite bullshit casino low life Coinroyale. See all your coins are gone now faggot what you got! Fucking Coinroyale and that retard Victor hahaha See ya!

What is this, some kind of Revenge Porn?

You hacked his router and stole his 0.04 BTC because he was fucking your sister? LOL...  so much for 0.04 BTC, right?

You don't get it guys? It's just some random troll ROFL.

[coinplus]

Better format your system with necessary back up. Install new OS and a Anti-virus.
Some keystroke detecting malware can hack your passwords and might lead to access to your bitcoin wallets.

[twicezeroiszero]

I guess theres nothing we can do about it cleaned my Laptop of Xunlei and Badu reinstalled Windows hopefully I be safe. Shit cant beleive a ll bitcoin gone FFS.

[TTMNewsMJ]

It's so sad.
I feel sorry for what you've lost.
Anyway, it's a lesson learned.

[notlist3d]

I guess theres nothing we can do about it cleaned my Laptop of Xunlei and Badu reinstalled Windows hopefully I be safe. Shit cant beleive a ll bitcoin gone FFS.

Sorry to see they were lost for good. That is never a good feeling.  This thread is the example why it's so important on safe wallets a storage that is normally first page anymore.

both my wallets on my android phone 2.58187103  *snip

Phones should not be considered a secure device or used to keep more then a little spending money. They are just a security risk.  Cold storage is ofcourse best.  But phones are pretty bad to use as a wallet for any sizable amount.

[twicezeroiszero]

I guess theres nothing we can do about it cleaned my Laptop of Xunlei and Badu reinstalled Windows hopefully I be safe. Shit cant beleive a ll bitcoin gone FFS.

Sorry to see they were lost for good. That is never a good feeling.  This thread is the example why it's so important on safe wallets a storage that is normally first page anymore.

both my wallets on my android phone 2.58187103  *snip

Phones should not be considered a secure device or used to keep more then a little spending money. They are just a security risk.  Cold storage is ofcourse best.  But phones are pretty bad to use as a wallet for any sizable amount.

I since formatted my computer and my phone is replaced. Never going to root my phone again after this.