Quote from: BTCevo on August 12, 2014, 04:16:31 PM

Would it be possible to edit the bitcoin-qt code so that when communicating with other peers it also grabs their private keys whilst grabbing their version of the blockchain?

This could be a possible security flaw am I right?

The way communication over the bitcoin network works is, you send me a message then I send you another message.
While you can modify your bitcoin-qt code to send any me message you want to send, I will not respond with a message containing my private keys.
Unless you can find a bug in the bitcoin software that causes it to respond to some message with private keys (for example, the heartbleed bug in 0.9 - I might be misunderstanding what exactly is possible, but it was bad enough that 0.9 is insecure).