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I sent some ethereum to an account and the incoming transaction shows up. Also there is an outgoing transaction of a small amount of ethereum, but the final balance of the account is close to zero. How is this possible?

https://ethplorer.io/address/0x3709965a82999eb7c38535dbae22fc54a08b692c

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  • Is this you account? It is possible someone else has the seed phrase / private key of it?
    – kfx
    Commented Oct 6, 2022 at 13:12
  • Unfortunately yes to both... the account was generated programmatically by an application I am working on. I have improved the key generation now ;) Commented Oct 7, 2022 at 8:02

2 Answers 2

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Each Ethereum transaction costs some amount of Eth to fund the transaction. e.g in your case it costs 0.022 Eth approx.

tx cost

So in addition to the amount you transferred, you also paid this fee(called gas fee).

See your transaction for details: https://ethplorer.io/tx/0xf412896a1d7f046db3c1e783bc0aeec52b09627ab6fb50eababf9899edea1bc2#pageTab=transfers

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Because an insane transaction fee was paid for the second transaction. The gas price for it was 1091 Gwei, when 6 or 7 would have been more than enough.

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  • That's right! The thing is, I didn't send the second transaction... I realize that someone might have my private key, which is bad, but anyway: I don't really see what's the use of sending a small transaction with an insane fee instad of just stealing the assets? Commented Oct 6, 2022 at 9:12
  • @mybinaryromance could be that a gas fee bidding was between bots was happening. If multiple bots have the private key for this address, and they will all compete for who can empty it first.
    – kfx
    Commented Oct 6, 2022 at 13:11
  • Ok that makes sense. Thank you :) Commented Oct 7, 2022 at 7:58

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