What if a transaction is fake? When is it thrown out? (nooob)

General Discussion
#1

Trying to understand some basics here:

So a hacker tries to send a fake transaction to be added to a block. The signature is obviously wrong because they didnt have the correct private key … is this kicked out instantaneously or does it become an unconfirmed transaction and is kicked out when a block is added - that can’t be because that would be a huge waste of time.

I’m ASSUMING that if someone tried to broadcast a phony transaction it would get thrown out instantly because the signature would be wrong… is this correct?

#2

i am not a pro but i do not think that you can manipulate the chain. what sometimes hapns is that hackers will brake in in a badly protected braine wallet.

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#3

Thanks Sting… I was trying to understand from a more technical perspective what happens before a transaction hits the a block.

#4

well as far as i know the whole thing about block chain is that you cant manipulat the transactions as long you dont hold great parts of the chain. since every membar has acopy and the system knows the personal volumes.

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