Quote from: pissing on October 21, 2016, 10:00:40 PM

Ive used bitcoin for a while and I know how to send/recieve etc I thought I was reasonably understanding of them but I have recently stated using a blockchain.info wallet.

In the app that comes with it on my phone there is a message that says sharing your xpub key enables others to disrupt your transations. I cant get my head around what this apub is and how it differs from when i just go onto the site and log in, press recieve and get a number to request btc to be sent to.

Can anyone point me in the right direction, i am wondering if I have been doing something wrong or if the blockchain app words differently to the other wallets I have been using

xPub key is a master public key of deterministic wallet. It can be used to view all transactions of all the addresses under it. It's very different from bitcoin addresses you get from your addresses list or when you "press receive".

Although I'm not sure if people can really disrupt your transactions with master public keys, you should be fine as long as you never share your xPub with anyone.