If some nefarious actor has the users credentials (e.g. username / password) won... | Hacker News

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		benjaminjackman on Jan 5, 2018 \| parent \| context \| favorite \| on: Bitcoin Visa debit cards are cancelled If some nefarious actor has the users credentials (e.g. username / password) won't they then be able to circumvent both of those checks? Maybe it's possible that so many people are signing up for Coinbase right now that it's flooding out the fraud?

tony101 on Jan 5, 2018 [–]

> "If some nefarious actor has the users credentials (e.g. username / password) won't they then be able to circumvent both of those checks?"

They would. However, typical ACH fraud entails pulling money using only the routing and account numbers, which can be found on all paper checks; this mechanism prevents that.

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