Questions tagged [cryptocurrency]

A cryptocurrency is a digital currency that uses cryptographic methods to secure and verify transfer of given currency. Tag should be used when talking about the security of, and surrounding, the implementation and use of cryptocurrencies.

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Is not Electrum's Seed Word Autocomplete a Theoretical Security Risk?

As the image below shows, when you try to restore an existing wallet from a seed (a sequence of 12 words), the program offers some autocomplete suggestions. Though I'm sure the risk is purely ...
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921 views

How seriously should we take this commentary from John McAfee? If it's serious, what do we do? [closed]

This question refers to this YouTube video of John McAfee Because videos can disappear, I've provided a screenshot and transcript (transcribed by me, so please forgive errors) What John is saying ...
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315 views

How do companies manage & store cryptocurrency private keys?

For an individual, I see a some options for storing private keys, such as printing them on paper in a vault, using a hardware wallet, encrypting and storing on the machine, using AWS Secret Manager, ...
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Copay cryptocurrency wallet attack: why did hackers rewrite module source file?

There was the notorious attack on the Copay cryptocurrency wallet in 2018. To recap it briefly, the JavaScript based wallet depended on a library, event-stream. Using social engineering, hackers ...
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How to securely use crypto wallet extensions?

Browser wallet extensions that let you interact with dapps are required to access different crypto-related services. These (to mention a few: MetaMask, Fortmatic, Tron wallet, etc) often require ...
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106 views

How are hardware wallets and other hardware-based security devices audited?

One selling point of the Trezor crypto currency wallets is that they are, supposedly, "open source". It is not clear to me exactly what assurance this provides, since I do not know what ...
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76 views

WordPress, a Security Risk for Bitcoin Application?

Asked this question on Bitcoin SE was told to post it here. I'm developing a custom Bitcoin service. Besides for the core application (which is written in PHP) I'm going to install a blog for updates ...
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1answer
253 views

Is there a downside to using a Ledger Nano S or X as both a crypto wallet and a 2FA key?

Newbie question, I guess. I want to get a cold wallet for increased security. I also want to start using hardware 2FA (e.g. for e-mail). I see that Ledger advertises 2FA capabilities ('FIDO U2F') on ...
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237 views

Securing BIP39 Phrases and Password Manager Master Password

I am looking for a review of the solution to store my Ledger Nano S BIP39 recovery phrase as well as my password manager usage. This solution is mostly based on this video. Few points that I think ...
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2k views

Someone is Cryptomining from my Google Compute Engine Instance

I run an airflow instance which python process scheduler, which is used to trigger different python ML process which has no relation to crypto mining. This is the process which is running this ...
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How secure is Libra considering Visa and Mastercard are behind it?

Libra is the upcoming cryptocurrency by Facebook which Facebook claims is supported by variety of tech companies including but not limited to Mastercard, Paypal and Visa. Facebook also enforces a real ...