Questions tagged [security]

Security issues with the design or implementation of Monero and related crypto-currencies.

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49 views

What are the risks of using a remote node through the Tor and a node hidden service?

How insecure is the use of remote nodes, but through the Tor and tor hidden services(remote node with .onion domain)? What are the possible attacks? How much damage can it do? Hope for your answer!
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162 views

Was my XMR lost or stolen? [duplicate]

I installed GUI wallet on windows 10 about 18 months ago and daemon wouldn’t start on its own. After restarting it manually every time, it synchronized and wallet was working somehow OK. I received ...
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Hash as encryption used by Monero

Monero uses a Pedersen commitment yG + bH to obfuscate the value of a transaction, where b is the value and y is the blinding factor. For the receiver to know both variables, it uses a Diffie-Hellman ...
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1answer
39 views

RingCT missing output indices

I'm currently studying about security about Monero, and I found something weird. I know that the ouputs of Monero transactions are identified by amount and indices (amount 0 for RingCT), and the ...
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80 views

I upgraded to a new My Monero App now I lost my coins?

I download the update 0.17.0.1-afc2e84(QT 5.9.9) and now it's taken me back to the original options (language, mode selection, open a wallet etc. Where do I find my old wallet key on my PC? I don't ...
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102 views

Problem verifying PGP for Monero GUI wallet

I'm working in Windows and trying to verify the hash and binary of the Monero GUI wallet. I followed the directions here: https://www.getmonero.org/resources/user-guides/verification-windows-beginner....
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72 views

What are the different ways to attack Monero?

If you were a sophisticated state actor and wanted to attack bitcoin, how would you do it? — Matt Odell Matt asked this question few days back on twitter about Bitcoin and its important for a lot of ...
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1answer
143 views

Estimating anonymity set size?

Is there any way to at least estimate what kind of anonymity set a user would have after churning Monero X times assuming the anonymity set of each individual transaction is the ringsize (i.e. there ...
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1answer
58 views

Security model for new auto update feature in GUI v0.16.0.2 'Nitrogen Nebula'

What steps are taken to verify the binaries via the new GUI auto update feature? How does it compare to downloading the them and manually verifying the hash as GPG key as was required for previous ...
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1answer
70 views

I sent a transaction and it gave me an error then went through

I was sending some XMR using XMR.to XMR.to gave me the address to send to in my monero wallet. The monero wallet went white and started thinking. It took along time. Then I'm not real clear on what ...
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1answer
149 views

Is there any evidence of Bitcoin being “Tainted”?

Monero claims to be fungible, meaning every XMR is worth the same as another XMR. But I've also people say this isn't true about Bitcoin - and that Bitcoin can be tainted. Is there any evidence of ...
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1answer
38 views

What sort of deanonimization attack could someone controlling the majority of nodes pull off?

In the era of Docker containers and how easy it is to spin up potentially thousands of nodes in a minute, what kind of attack could some malicious actor pull off if they performed this? Would ...
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64 views

How was the official Monero website hacked to deliver malware at the end of 2019?

According to arstechnica, on November 18th 2019 the official Monero website was hacked to deliver compromised binaries. Is any information available on how this attack occurred? Was it the website ...
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Understanding a security proof of RingCT 3.0

I am reading the paper "RingCT 3.0 for Blockchain Confidential Transaction: Shorter Size and Stronger Security" (https://eprint.iacr.org/2019/508.pdf), an improvement to Ring Confidential Transactions....
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1answer
326 views

Does using a remote node compromise the whole wallet?

If I'm using Tails and I use a remote node, does that compromise the whole wallet at some point in the future? For example, can the node determine my Monero wallet address or identify my wallet ...
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149 views

Monero transfer privacy

If I want a transaction to be private, is it safe to follow a path like: Coinbase > MorphToken (using Windows) > Official Monero (using Tails) > destination
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50 views

Would an attacker knowing the block-heights of my wallet's transactions weaken my privacy/security?

Let's say I'd go through all the transactions in my wallet, write down their block-heights and store this list somewhere insecure. Could my privacy or security be compromised by this in any way (...
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65 views

Does the Monero executable for Windows not have a code signing certificate?

I was getting really nervous about using the Monero wallet. It seemed like the download page was ww.getmonero.org/downloads, which I thought was weird. Additionally, the executable for Windows wasn't ...
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1answer
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How was the generator H for the RingCT scheme chosen?

I'm reading the RingCT whitepaper by Shen Noether. The scheme requires a second random generator H such that its discrete logarithm w.r.t. G is not known. Paragraph 3.2 suggests two variants to ...
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88 views

Should I use a hardware wallet?

I hear a lot about hardware wallets and I would like to know if, in terms of security and functionality, it makes sense to switch to one of them. Thanks in advance for answers.
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69 views

Will the Multisig Messaging System improve Monero security and performance?

I'm trying to understand the incoming MMS (Multisig Messaging System) in Monero. Reading the MMS User Manual, I am thinking that MMS could improve both the security and performance in the next Monero ...
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0answers
162 views

Why did I get an 'using an untrusted daemon' warning?

I'm running a full node and I followed every security step to set up the node on my computer. Everything was going great until today when I realized that a view-only wallet created the day before was ...
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1answer
2k views

Is it safe to use a remote node?

I started using Monero from now and my laptop takes a lot of time to download the blockchain. Also, my SSD is small and nearly full. I was reading about the use of a remote node to sync my wallet, ...
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1answer
823 views

Does Monero (XMR) or Pirate (ARRR) offer better privacy and security?

I have read several comparisons between Monero and Pirate. Can someone please explain to me the objective pros and cons about their privacy offerings? Is one more secure than the other? What are the ...
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1answer
43 views

Is it okay to host a node that connects on the clearnet?

There is some concern in regulatory bodies about governing Monero in the future. Does this have implications for people hosting nodes at home on personal computers and connecting on the clearnet, ...
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1answer
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Suspicious connections - Having issues with the GUI under Debian by connection to a public remote node - PC hangs

Having a Windows client with local node - works perfect. When trying to connect with the Debian client to a remote node (eu.node.moneroworld.com at port 18089) the pc hangs immediately and cinnamon ...
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1answer
3k views

Can I run monero desktop wallet over Tor?

Can I use desktop version of monero wallet https://getmonero.org/downloads/ over Tor ? I read Web version mymonero.com is rejecting Tor connections. Does desktop wallet work over Tor ?
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53 views

Backup and Disaster Recovery for Monero Fork

For a clone of Monero in a production environment, what files/directories to be backed up and and what intervals?
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1answer
60 views

Migrating Monero Fork from Test to Production

When migrating from Test to Production of a Monero Fork, what needs to be considered? For example, launching the Seed Nodes in "--restricted-rpc" mode.
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1answer
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Mitigating Risks of Forking Monero

When Forking Monero on GitHub, the code base becomes a public repository. The benefit of Forking as opposed to cloning into a private repository is that the link to the original code base is ...
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1answer
104 views

lost my phone with 2FA code

I lost my phone, so I lost my 2FA code too. Now I have new phone and I cant to login to the my wallet in step 2. where I need to get 2FA code from Authenticator. I am using Monero app on iphone. I ...
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1answer
146 views

What is an airdrop attack?

I just came across this thread on Twitter discussing Zcash and Monero usage in Dark-Net Markets. This quote bothers me: too much risk that an "airdrop attack" deanonymizes a chain like ...
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2answers
158 views

SSL usage in Sumokoin/Monero

There is this merge: https://github.com/sumoprojects/sumokoin/pull/63 that enables SSL for Sumokoin (can be used also for Monero). What is it used for? I guess For SSL communication between RPC-...
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1answer
936 views

monerov windows wallet gui.exe showing up as Trojan

Why is moneorv windows wallet gui.exe being quarantined as Trojan.BitCoinMiner by malwarebytes ?
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Improvements on generating monero wallets securely?

My current process of generating monero wallets: Use an air-gapped RaspberryPi Use monero-wallet-cli to generate a wallet Record mnemonic on paper only Record partial address for reference on paper (...
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1answer
218 views

Monero Gui didn't create .keys file for wallet, it crashed, wasn't able to restore wallet, is it lost?

My Monero Gui was freezing every 10 seconds when I clicked on it so I just killed the process, after trying to reopen multiple times I killed the monerod daemon process as well When opening again the ...
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1answer
106 views

Offline Signing 2/3 Multisig

Interested in weather offline signing for 2/3 Multisig wallets is possible in this setup. I have three computers Airgapped from the internet, and a USB. I imagine i can pull down some outputs for ...
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1answer
132 views

Where can I find the random public key R=rG in a Tx?

I've read the white paper of Monero(CryptoNote v2.0) and a problem confuses me. This paper says that when Alice sends coin to Bob, she uses P = Hs(rA)G + B as a destination key and packs value R = rG ...
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2answers
473 views

Why does Monero use a 256 bit seed?

Apparently, ECC 256 bit keys have a bit strength of 128 bits. See https://crypto.stackexchange.com/questions/26791/how-many-bits-of-entropy-does-an-elliptic-curve-key-of-length-n-provide And ...
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2answers
4k views

How can individuals safeguard themselves and the community against a key reusing fork?

Regardless of the true intention behind the MoneroV developers, it forking off the existing Monero blockchain poses danger to the privacy of Monero users. While the MoneroV forking date has been put ...
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68 views

Why AVs reject miners?

I have been trying to install miners on my windows, but mostly detected as a threat by AVs. Why are most of the miners blocked by Antivirus programs? Is there any miner which has no problem with ...
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2answers
4k views

What is MoneroV, and how is it different than Monero?

I have heard of an upcoming airdrop called MoneroV. Can someone explain the relationship between Monero and MoneroV, and explain their differences?
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1answer
61 views

Will there be security vulnerable if you left your wallet address and password in public?

So usually we got no password or x as password but my wallet got an password but since usually there isn't a password for wallet I'm wondering if I left my wallet address and its password in public ...
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2answers
2k views

How to set up password on xmrpool.net mining pool?

I'm new to mining and I don't know how to set up a password and a username on xmrpool.net mining pool. Can anyone help me to do this?
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1answer
95 views

How could you lower the risk of accepting zero confirmation transactions?

As far as I heard monero nodes don't add double spent tx to their txpool (source), so if I connect to enough nodes it should be possible to lower the risk of a double spend attack right? (I could also ...
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1answer
889 views

How can I make a coin using Monero? [closed]

I am developing a coin using the Monero git code, so I want to know what is the setup we need to follow to create our own coin using Monero. Coin development Coin Api development Coin explore Coin ...
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1answer
691 views

Best practices to keep Monero wallet secure

I'm using a read-only wallet on a computer connected to the Internet, a dedicated local server for the Monero node and I keep on a USB key the full wallet as cold storage to use it only in case. Also, ...
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1answer
246 views

Can a remote node know my wallet address?

When I connect my wallet to a remote node, does it know my wallet address? What information about a connecting wallet is revealed to the remote node?
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1answer
56 views

When using a foreign remote node does the transaction signing happen on my wallet or on the node?

I don't understand the architecture of Monero wallet(s) - on OSX or on Android. When I choose not to run my own full node/daemon and use (foreign) remote node instead, how does the security of ...
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1answer
746 views

How to setup own remote Monero node with maximum security / anonymity?

I'm interested in setting up my own remote monero node for personal use on a home computer running OSX. According to this guide all I need to do is setup an SSH-connection with a command line which ...