Looks like someone has rebroadcast your original transaction to the network just now...
No idea who did that and why he did that, but the good news is others won't be able to alter the recipient address and steal your bitcoin.
Can you elaborate on that more? I don't understand how someone else can rebroadcast my old transaction that never got confirmed & was cancelled.
If you go to "
https://blockchain.info/tx/?format=hex" you can get the raw transaction of any particular transaction, and you can rebroadcast it on pages like
https://blockchain.info/pushtx or on many wallet clients.
But as I said, I have no idea why someone would do that, as he has no benefits in doing so.