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2301  Bitcoin / Electrum / Re: Is Electrum a safe wallet to keep bitcoins? on: May 29, 2016, 07:01:03 PM
Thanks! But if the electrum software gets updated, what will happen to my bitcoins? Do I have to use download the latest electrum to keep my bitcoins?

bitcoins aren't physical things... Basically, a wallet is just a piece of software to manage your private keys, generating transactions, broadcasting.
If electrum updates, nothing happens. You either chose to install the update or not (which usually goes seamingly, and if it goes wrong, you just use the seed words you wrote down when you first installed electrum, and restore your wallet... The worst thing that'll happen is the fact that you lost your labels).
If you chose to run an outdated version, you won't have access to the latest bugfixes, patches and new features, but usually,it's not a real problem.

PS: I'm also a big electrum fan. Core might be a tad bit better, since you synced and verified the full blockchain, but electrum is still good, since your private keys don't leave your computer, and can be encrypted with a strong password and 2fa

Electrum is a good desktop wallet, even better when used with a Trezor so your private keys are always kept offline.

I do not know if it is worthwhile to invest in a hardware based Trezor wallet at the moment as I am still exploring how bitcoins work.

Fair enough. If you have a full bitcoin you need a hardware wallet. Ledgers are less than $30 if Trezor is too spendy for you. Your explorations should include a look at hardware wallets also.

If you have an extra older laptop not being used and you can leave disconnected from the net you can do cold storage the old way using Electrum cold storage. Not used much nowadays since hardware wallets are cheap and more convenient, also work with your phone.
2302  Bitcoin / Electrum / Re: Is Electrum a safe wallet to keep bitcoins? on: May 29, 2016, 03:25:30 PM
Thanks! But if the electrum software gets updated, what will happen to my bitcoins? Do I have to use download the latest electrum to keep my bitcoins?

bitcoins aren't physical things... Basically, a wallet is just a piece of software to manage your private keys, generating transactions, broadcasting.
If electrum updates, nothing happens. You either chose to install the update or not (which usually goes seamingly, and if it goes wrong, you just use the seed words you wrote down when you first installed electrum, and restore your wallet... The worst thing that'll happen is the fact that you lost your labels).
If you chose to run an outdated version, you won't have access to the latest bugfixes, patches and new features, but usually,it's not a real problem.

PS: I'm also a big electrum fan. Core might be a tad bit better, since you synced and verified the full blockchain, but electrum is still good, since your private keys don't leave your computer, and can be encrypted with a strong password and 2fa

Electrum is a good desktop wallet, even better when used with a Trezor so your private keys are always kept offline.
2303  Bitcoin / Bitcoin Discussion / Re: Ledger Wallet - My Review - Comparing Wallets For Security - Wiped itself??? on: May 28, 2016, 02:31:49 AM
I have a Trezor and Keepkey and highly recommend both.

KeepKey IMO has a security flaw in that passphrase encryption of your seed is not enabled by default. KeepKey can certainly enable passphrases but they have not. Management must have had a bad experience in the past losing a passphrase. To protect your Trezor against physical attack encrypting your seed with a passphrase is a good option, as long as you feel comfortable with it. If you lost your passphrase you would lose your bitcoin. However the seed would be worthless to a thief without the passphrase. Trezor gives you the option it is your choice. Because of the way Ledger uses a secure element passphrases are not required or needed. However you may miss the convenience of the screen Trezor provides. It is good to have choices.
2304  Economy / Speculation / Re: Wall Observer BTC/USD - Bitcoin price movement tracking & discussion on: May 28, 2016, 02:13:45 AM
Until Ether uncouples from bitcoin owning Ether is a good hedge. As bitcoin goes up Ether has been going down. Ether is not going away and as much as we love bitcoin it makes sense to own some Ether also. If you did not buy Ether when it was cheap this next week could see Ether/BTC below .02 and that would present a good buying opportunity.
2305  Bitcoin / Bitcoin Discussion / Re: Ledger Wallet - My Review - Comparing Wallets For Security on: May 28, 2016, 01:56:47 AM
I have been saving about 50btc online. Think its time for trezor now

Dude, storing over 23K online is dangerous. Get yourself a Trezor right away, pay for the DHL express shipping and you can have in a few days. Seriously. You can prepare yourself by reading the online user manual while you are waiting for the unit to arrive.
2306  Alternate cryptocurrencies / Speculation (Altcoins) / Re: ETH being dumped now! on: May 27, 2016, 03:59:52 PM
So far there has been a nice inverse relationship between the price of bitcoin and ether, making ether a good hedge against lower bitcoin prices. Will be interesting to see if that relationship maintains over the next week.
2307  Bitcoin / Bitcoin Discussion / Re: Do not use USB sticks for long term storage! Its not safe! on: May 26, 2016, 06:05:09 PM
I was considering a trezor, but I don't see how trezor like devices aren't going to suffer from the same thing as any solid state storage, so I think I will keep saving my stuff on different usb and on different hard drives too and do period backups. It's simply impossible that they all break at the same time and I end up with no bitcoins. Additionally, upping it somewhere with a strong password and changing the file extension seems like a good idea, but im not sure if changing the file extension cam damage a wallet file.

You should read the Trezor user manual to appreciate exactly how a Trezor works. The 24 word seed that is generated when you initialize your Trezor is the source for all your private and public keys and bitcoin addresses. As long as your seed is stored safely the longevity of the Trezor device is irrelevant. Lose it stompt it to pieces if you like. Then just recover your seed to a new Trezor and back to normal. Most folks who use Trezor keep a spare around for just that. I have Trezors that are two years old and still work fine by the way, but I certainly do not expect them to last indefinitely. The seed in effect is your bitcoin and as long as you have your seed your bitcoin are completely safe.

You can use the same Trezor for both bitcoin and litecoin and Ether support is expected as soon as Mist developers get around to integrating the Trezor API. There are other hardware wallets but I consider Trezor the most versatile.
2308  Bitcoin / Bitcoin Discussion / Re: Saving Private keys/Seed/Back-up on email? Safe or not? on: May 25, 2016, 08:02:00 PM
Not safe at all. Consider a Trezor hardware wallet and protect your seed with a passphrase that you can remember. The seed is no good to a thief without your  passphrase so store your seed in a few places, safe deposit box and so on. The only bitcoin hardware wallets that support passphrase encryption of your seed at the moment are Trezor and BitLox. There are rumours that KeepKey might, but so far no joy. BitLox is a good hardware wallet but not open source and twice the cost of Trezor. Trezor support of Ether is also coming once Mist developers implement the Trezor API.
2309  Bitcoin / Bitcoin Technical Support / Re: Is this practice safe? (how to avoid keylogger when I type pass?) on: May 24, 2016, 03:28:11 PM
...
Also let's say that you connect your Trezor to a computer that's infected with a RAT or something, is Trezor immune to any problems your computer might have? you have to put a pass in the mytrezor thing too.. what if they steal that data?

I don't know how Trezor work and affected it or not, but I saw in the news warning about "Trojan.Coinbitclip"
Quote
The Trojan then monitors the compromised computer for Bitcoin addresses copied to the clipboard.

The Trojan contains a hardcoded list of Bitcoin addresses.

Once the Trojan detects a Bitcoin address in the clipboard, it replaces it with one from the hardcoded list.

The Trojan selects an address from the list that most closely resembles the address it is replacing.
https://www.symantec.com/security_response/writeup.jsp?docid=2016-020216-4204-99&tabid=2

But it's very low level risk.

trojan.coinbitclip has low impact on Trezor see this post on reddit
2310  Bitcoin / Hardware wallets / Re: myTrezor and future offline? on: May 22, 2016, 04:51:32 PM
Of course i have my seed Smiley but if i lost it (for instance) i do not have to buy a new Trezor, isn't?

If you have your recovery words you can restore it via a BIP 32/39/44 compatible software wallet including Multibit HD or mycelium, or on another Hardware wallet including Ledger / KeepKey.

Trezor has a secure recovery process. If you type your complete seed into a computer to recover into any other wallet you risk exposing the seed to a keylogger. Make sure your computer is free of malware.
2311  Bitcoin / Hardware wallets / Re: myTrezor and future offline? on: May 21, 2016, 07:07:08 PM
Of course i have my seed Smiley but if i lost it (for instance) i do not have to buy a new Trezor, isn't?

If you lost your seed you best buy a new Trezor then send your bitcoin from the old Trezor to the new one before something unfortunate happens like theft or loss. Storing bitcoin on a Trezor for which you lost the seed is high risk. Not worth it.
2312  Bitcoin / Hardware wallets / Re: myTrezor and future offline? on: May 21, 2016, 03:18:43 PM
I have a Trezor and made a wallet online on mytrezor.com. But what happens when the site goes offline for some reason? I don't have a private key as far as i know. Anyone an idea?

You did write down the seed for your Trezor and keep in a safe place right? If your Trezor is lost you need that seed phrase to recover. If myTrezor.com is down briefly for maintenance you can always fire up a new installation of Electrum, select new wallet and hardware wallet, then Trezor and manage your bitcoin in Electrum.

If you have lost the seed to your Trezor you should buy a new one, set it up and send your bitcoin from the old Trezor to new one. See the Trezor user manual. Most Trezor users own more than one just in case of loss or breakage.
2313  Bitcoin / Bitcoin Discussion / Re: How safe is to storage private keys in the cloud? on: May 21, 2016, 03:09:42 AM
Never. Two choices are:

1) Old school. Use Electrum or Armory for cold storage using two computers, one online for watching only half of the wallet, the other strictly offline for the wallet and private keys. Use a USB drive to transfer transactions. Still popular with some.
2) Bitcoin hardware wallet. Trezor is the most trusted having a two year track record. Also most versatile.
2314  Alternate cryptocurrencies / Speculation (Altcoins) / Re: Eth will skyrocket the next days on: May 19, 2016, 05:46:12 PM
This DAO and ETH crap is tiresome, but im not gonna lie, I hope it pumps since me and a lot of guys that bought in are still hoping to get rid of it and make some extra BTC while the hype on those alts is still relevant, so please yes, keep it pumping up until it collapses. When are you going to dump? I think 15 looks good, maybe even 20 dollars! but doubling the price is getting harder now with ETH.

If ETH/BTC on Polo approaches ATH of .0372 I will definitely go short. That is probably closest to a sure bet I can think of. Lot of holders ready to cash out who missed their chance in March.
2315  Bitcoin / Electrum / Re: Offline signing with KeepKey or Trezor on: May 18, 2016, 01:22:37 AM
We used to have to use two computers to protect bitcoin private keys from theft or malware. I preferred Armory over Electrum for privacy reasons but it was a royal pain to boot up two computers then use a USB drive to carry transactions from the watching only online wallet to the offline Electrum or Armory wallet to sign. Trezor changed all that. You would have to explain your position that using Trezor is less secure than the old method.
2316  Bitcoin / Mining speculation / Re: Genesis Mining SHA256 contract Payouts. Profitable? on: May 17, 2016, 08:44:49 PM

So what is Genesis' maintenance charge per TH/s? I didn't try them because they are not transparent about it up front.
I did purchase a small amount of X11 and ETH with them and payouts are regular... I think I will make a small amount of ROI with those.

They have never been transparent and use fanboys to drum up business. Usually no one who takes time to research the competition would buy hashing from GM. You are likely to be underwater at the halving, have your contracts cancelled and there has never been a market where you can sell your hashpower. Until the halving I would not buy hashpower from Hashnest or BW either. Wait for the newest gen miners to be introduced them make a decision.
2317  Bitcoin / Electrum / Re: Offline signing with KeepKey or Trezor on: May 16, 2016, 11:03:27 PM
Good luck with this, you appear to be trying to use Trezor with Electrum is a way not intended by the developers. You first initialize Trezor using myTrezor.com then connect to Electrum as described in the user manual. Electrum just takes the place of myTrezor.com.

If you want one of the developers to comment you will have better luck posting on /r/Trezor at Reddit.
2318  Bitcoin / Bitcoin Discussion / Re: My computer have just been hacked for BITCOIN ransom! on: May 15, 2016, 11:23:33 PM
http://www.bleepingcomputer.com/ is one of several good sites to browse to stay up to date on malware threats and defense.

At http://www.bleepingcomputer.com/download/search/?keyword=malwarebytes they have downloads for two Malwarebytes products that you can layer with your existing security programs. They have a beta of Malwarebytes Anti-Ransomware (free) and also free Malwarebytes Anti-Exploit that are designed to work together. You are probably already familiar with Malwarebytes Anti-Malware.

I also like HitmanPro very much. It is a paid program but they give you a thirty day free trial. It was a big help when I had to help a friend scrub an infected computer.

Malware Tips also has a good guide to using advanced programs in safe mode.
2319  Bitcoin / Bitcoin Discussion / Re: My computer have just been hacked for BITCOIN ransom! on: May 15, 2016, 06:21:18 PM
You should never have important information on a windows machine. If you can't afford 2 computers (because only total isolation is safe) you can just get constant backups on your usb pendrive of any sensible data, so if some fucker encrypts your computer you just have to format it and they will get nothing out of it. Also install malwarebytes anti ramsonware software.

Most people use Windows; OSX and Linux are the minority, it would be helpful to list ways to secure Windows best as possible. I will start the discussion if you are using Windows. If you are using Windows 7 the best advice I can give you is not to update to Windows 10. Stick with Windows 7 for improved privacy.

1) Use Firefox, not Windows Explorer or Chrome. Go to Tools > Addons > Plugins and disable Shockwave Flash to prevent malware delivered by Flash banners. At the minimum use uBlock Origin extension to block all other ad banners.

2) Use a top rated security suite like Kaspersky Total Protection. Even with Kaspersky use good hygiene. Never click on links or banners in emails or heaven forbid open an attachment. Even friends can pass on a virus or trojan by forwarding a bad email. Most malware is delivered by email, not websites.

3) If you have more than a few bitcoin use a hardware wallet like Trezor.

4) Make a system restore disc and store safely in case you have to reformat your hard disk and restore from a backup. Get a 2-5 TH backup drive so you have plenty of space for multiple backups and backup weekly.
2320  Bitcoin / Bitcoin Discussion / Re: How safe is it to store your bitcoins on a mobile phone? on: May 14, 2016, 10:32:18 PM
I cannot assure for 100% but when my mobile is with me all my funds will be secured. I'm using mycelium android wallet. And i've backup my wallet 3 times on different places and different methods. Also i've set password for my wallet as well as to open the app.

Mycelium is a good Android wallet but it is only a matter of time until there is Android malware stealing bitcoin through key logging or transposition of bitcoin addresses. I would never store more than needed for a days shopping on Mycelium. That is just asking for theft. The good thing about Mycelium is it works perfectly with Trezor.
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