Can a hacker get into a bank’s system and zero out all the customer accounts? Why or why not?

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A terrifying thought I sometimes have is to finally retire with my 401(k) only to have a cyber attack wipe out all the assets I spent my entire career accumulating.

In: Technology

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Anonymous 0 Comments

It depends on what you mean by “hacking”. The kind of hacking that’s portrayed in movies and TV is usually somewhat analogous to breaking into a house by smashing a window – nobody, not even authorized users, are supposed to get in that way. Any halfway competent bank will have many different systems in place that will make it easy to detect unauthorized modifications to account balances, and to restore the correct balances. It’s kind of like how if you broke somebody’s window to break into their house, they’d definitely notice once they got home.

The kind of hacking that’s much more practical and common is to steal account credentials (usernames, passwords, social security numbers, etc), log in as you, and transfer money out to another account. This is analogous to stealing somebody’s house key and walking in the front door. From the bank’s perspective, this just looks like you actually wanted to transfer the money, so it doesn’t raise any red flags. That’s why protecting your account credentials (using strong passwords, a different password on every account, setting up two factor authentication, etc) is so important.

Now, if this ever happens to you, you may still have some recourse. E.g., if the hacker transferred money from your account to a different account at the same bank, the bank might just be able to reverse the transaction. However, if the hacker transferred money from your account to an account at a different bank – especially if it’s a bank in another jurisdiction that doesn’t play nicely with your country’s law enforcement – then you may be SOL. Depending on how nice they’re feeling, the bank may just give you the money back from their own pockets, but this isn’t guaranteed.

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