Questions tagged [wallet-security]

Questions about keeping wallets and e-wallets safe.

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0answers
15 views

Reuse air gapped Raspi used for seed generation?

Would it be wise for an air gapped RasPi used for seed generation be used again online with a new micro SD card? Am i missing anything?
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3answers
92 views

What is the best way to generate bitcoin wallet?

I am trying to create a cold storage, and I'm becoming so paranoid about everything on software and hardware (also afraid of myself forgetting/losing the wallet) related to the setup. I have read some ...
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1answer
58 views

Blockstream Green Wallet Security

I am trying to understand how secure the green wallet is. I thought of a few scenarios where my funds might be in danger: If GreenAddress service becomes unavailable, they have a nlocktime ...
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1answer
62 views

As the Bitcoin price skyrockets, how to avoid getting malware through freeware/FOSS software's updates?

We have a situation now where the vast majority of software I have installed on my computer (Windows 10, since there are no other supported versions of Windows) are either aging one-man freeware ...
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18 views

Extensible wallet programs [closed]

Assume someone was writing a brand new crypto currency protocol. Are there any extensible wallet programs such that that person could write a plugin (or something) so that the wallet programs ...
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2answers
57 views

Can you really trust a non-open-source desktop wallet?

I am a newbie in the crypto markets, but as a software engineer, it seems to me that a huge security vulnerability could be choosing a wrong wallet. If you are using a hot wallet, and can't see the ...
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1answer
33 views

RPC security of bitcoind node

If I have a fairly default bitcoin.conf file, let's say: rpcport=8332 txconfirmtarget=6 ie: notably one where I don't specify things like rpcuser, rpcpassword - is this insecure? As I understand, ...
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44 views

Can you think of a safe way to safely keep my “spendable” Bitcoin in my situation?

I have my "cold stash" wallet.dat on multiple fully offline, encrypted hard disks/sticks inside a fireproof safe. I never seriously considered printing them onto paper because that would be ...
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0answers
39 views

How to generate a very secure wallet with Electrum?

For a poor-mans glacier protocol, looking for: One private key – an alphanumeric string used to secure the funds The cold storage address – an alphanumeric string designating the virtual “location” of ...
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54 views

Starting bitcoind for the express purpose of creating a wallet?

Referencing this solution: My favorite method: grab out a old/unused pc/mac install a linux over usb (maybe Talis) (make sure your USB stick is clean!) download a recent version of bitcoin-core (...
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1answer
46 views

What needs to be written down for a paper wallet?

I'm installing bitcoin-core with snap on Ubuntu for a dry-run at generating a paper wallet. Perhaps naively, I thought to "write down" something like: nicholas@mordor:~/bitcoin$ nicholas@...
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1answer
89 views

Are all 'metal wallets' functionally equivalent?

Within the context of wallets, is it correct that a metal bitcoin wallet needs to store both public and private keys? I'm looking at some metal wallets and want to clarify that the're all basically ...
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20 views

distinction in types of wallets: on a device, physical medium or in a program? [duplicate]

What is the distinction between a paper wallet, cold storage, and off-line storage? Perhaps I'm naively lumping them together. To my understanding, a wallet is: A cryptocurrency wallet is a device,1 ...
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1answer
165 views

Sugar Daddy Bitcoin

I’m 19, some guy messaged me on instagram asking if I would be interested in an online arrangement with him for a weekly allowance of 600$, so basically a sugar baby, we then switched over to ...
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1answer
42 views

Import private key in HSM Luna SA

I need some clarification on how keys are imported into a HSM Luna SA. I should import BIP 32 private keys of multisign wallets. There are currently two keys: one for the user and one held by the ...
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3answers
3k views

What stops a wallet from stealing bitcoins?

I'm not particularly knowledgeable on the topic of cryptocurrencies so it's possible that I've missed something obvious, but I still wonder what it is that stops a wallet from stealing from you. ...
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1answer
60 views

Manual work as source of entropy

Working on an opensource air-gapped crypto vault, in which I have the regular method of relying on OS to provide cryptographically secure random source and use that to generate the mnemonic phrase. ...
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1answer
115 views

How to check that I control an address

I recently created a bunch of bitcoin addresses (public starting with 1, PK starting with 5) from a paper wallet, that I downloaded from their github (https://github.com/walletgeneratornet/...
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2answers
94 views

Suggestion for Airgap Bitcoin Core - Comments?

Lesson learned the hard way: I lost a small value of bitcoins due to foolishly backing up private keys to a file which was uploaded to a cloud server. My wallet used to be bitcoin core. Right now my ...
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1answer
74 views

Offline Bitcoin Wallet [closed]

I would like to have bitcoin and store them as safely as possible. I want bitcoin data to be stored on my disk -- I don't want to some online service to manage my wallet. I also would like to have ...
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0answers
23 views

A book about cryptocurrencies wallet or key creating [duplicate]

i'm studying about cryptocurrencies wallet, and i'm searching for a book in this subject but i couldn't found it.please Introduce me a good book that covers all information about wallets. thanks.
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1answer
65 views

generate wallets in exchanges like binance?

I'm a Laravel developer and I have a project in exchanges field. I need to know how can I generate deposit address for per coin belongs to per user. I want to do this in secure way and I need to best ...
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1answer
137 views

My Bitcoin Core Sent Bitcoins Without My Authorisation

I am running Bitcoin Core version v0.19.0.1 (64-bit) on Windows 7, and on 27 February I noticed that it sent 0.0045 bitcoins on its own. The wallet is encrypted at all times and I enter the ...
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1answer
74 views

Relationship of Bitcoin address and Public Key

I am trying to understand relationship between your Public Key and bitcoin address. After reading few blogs my understanding was that after generating your Master Key pair, in HD wallet. One should ...
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1answer
55 views

MITM attack in hosted wallets

i have a question: in the web wallets(hosted wallets)when user want to make a transaction and send the information to the wallet server , can a one change the information(man in the middle attack)?
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1answer
148 views

Bitcoin Core full node wallet - questions about security & recovery

can you tell me pls, 1) Which secure full node wallet implementations exist? Currently I just know of bitcoin core. Is there not any other one with a GUI? 2) Can you use a Ledger device with those ...
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1answer
79 views

Do you need to run own server when using a full node wallet?

Hi can you help out pls: 1) There are some full node wallets like Bitcoin Core or Wasabi. What other full node wallet apps are available to select from for bitcoin? 2) I have read about people using ...
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1answer
91 views

Security trade-offs between centralized wallet system and a SPV wallet?

there are many wallets on the market. And I would appreciate if someone can clarify the key technical security advantages or disadvantages when using a SPV wallet vs a centralized wallet. I am ...
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1answer
86 views

Wallet validation methods (centralized, SPV, etc.) - please clarify for Ledger and in general

1) ledger: https://bitcoin.org/en/wallets/hardware/ledgernanos/ Variable validation - Payment validation features are provided by the software wallet you use with this device. 2) wasabi: https://...
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1answer
40 views

Bitcoin wallets- question about control and centralization

Community, Just a quick simple question very important for me to understand about the security of wallet types. Are there bitcoin wallets which can shut down and block/freeze/control your bitcoin ...
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2answers
39 views

Wondering about the viability of a Hardware Wallet

I want to roll my own hardware wallet using a USB stick. I have some concerns: Do I need to download the entire blockchain in order to create a new wallet? Do I need to download and store the entire ...
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1answer
64 views

Why can't a longer key combat quantum computers?

Google's new quantum computer performed a calculation in 3.5 minutes that would have taken 10,000 years on a normal computer (so they claim: https://www.space.com/quantum-computer-milestone-supremacy....
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2answers
87 views

Who store seed phrases data

Seed phrases seem to be pretty secure, approximately as strong as bitcoin private key according to this site https://en.bitcoin.it/wiki/Seed_phrase. But who store the private key adresses of these ...
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1answer
92 views

Why doesn't the Bitcoin-qt client ask for the Wallet passphrase upon startup?

I've just encrypted my wallet.dat file using the "Settings -> Encrypt Wallet" menu option. I then closed the client and re-opened it. I was expecting to be prompted to put in the wallet password ...
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1answer
561 views

Are vanity addresses Vanitygen generated really safe to use?

I’m not talking about whether Vanitygen can crack an any existing wallet or not. I know it is practically impossible, considering the computational resources required. But what if, it’s to crack ...
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3answers
586 views

What did I do wrong that caused me to lose bitcoin?

I've been accumulating bitcoin into a paper wallet for a couple weeks. It's all been stolen. I'm trying to figure out what I did wrong: https://www.blockchain.com/btc/address/...
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2answers
62 views

If a bitcoin wallet service provider terminates a users account, what happens to the funds?

A friend of mine has/had a bitcoin wallet service provided by an online marketplace. Sounds like he had some kind of disagreement with the site administrators and they terminated his account. At that ...
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1answer
87 views

Inbound requests after opening Electrum

A few days ago, I was exploring Electrum (Android) out of curiosity. A few moments later, I get notified by our firewall that it flagged several suspicious inbound requests. The source IPs came from ...
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1answer
87 views

Is it safe to store user's secure pass-code in database with encrypted form while creating bitcoin wallet?

I would like to create a Bitcoin Wallet. Part of the process is to store public and private keys in encrypted form in server database. All keys I am storing is encrypted using user's passcode. 1) ...
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3answers
2k views

What can you do with the private key?

I am trying to understand all security regarding blockchain and bitcoins. Let's say you have a bitcoin wallet which is secured, only you know the private key. This bitcoin address was created on one ...
3
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1answer
511 views

How can a third party spend BCH accidentally sent to a BTC address?

I transferred BCH to an Electrum wallet address and haven't ever received it because Electrum uses only BTC. As I have been trying to recover it, I looked up the transaction on explorer.bitcoin.com ...
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1answer
51 views

What type of Bitcoin wallet is more secure than others?

What type of Bitcoin wallet is more secure than others among Paper wallet, Physical bitcoin, Mobile wallet and Web wallet ?
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2answers
48 views

Physical bitcoin vs. Paper wallet?

What is the main difference between a Physical bitcoin and Paper wallet ? And which one is more secure ? And why ?
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4answers
116 views

Exchanges and security

How can I ensure that my crypto-assets are secure when trading in a certain exchange? Even when I have my private wallet, I should deposit into theirs before trading.
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1answer
86 views

Virus warning in Bitcoin [cash] ABC client? [closed]

I tried to download Bitcoin cash ABC wallet from bitcoincash official site. If I download zip to my computer and upload it to VirusTotal site, it says 11/62 positives. If I go to VirusTotal site and ...
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1answer
72 views

Best OS for cold storage

I want an OS which can be easily disconnected from all hard drives (just uses USB) and can be booted from usb stick, also secure enough and disconnected from internet by default (or something I can ...
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2answers
451 views

Is It Possible to Prove Ownership of Public Key Hash without Public Key?

I am building a system where I would like the user to specify a public key hash of a wallet that they have control over in the event of tips, refunds, and/or otherwise needing to send value back to ...
4
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3answers
212 views

How can I safely store and trade Bitcoin and other crypto currencies?

How can I safely store Bitcoin? Exchanges require me to deposit to trade, is this safe? If I can't trust exchanges, what is the best way to safely store my cryptocurrency and transact it?
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1answer
65 views

Possibility of hardware wallets being 'unsupported' in the future?

I was reading online about getting a hardware wallet/vs a paper wallet, and some comments online were mentioning that "Tech changes so quickly that in 16 years the hardware wallet might be completely ...
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2answers
2k views

How does crypto exchange secure private keys?

I'm wondering on what is the current common apporach that is used by centralized crypto exchange to secure the private keys of the bitcoin wallets