Yes, there was a news about attack on bitcoin network and some people were saying that the transaction were not getting confirmed due to that. However, I doubt there was an attack of any sort. The confirmation was getting delayed due to the congestion of transactions and unavailability of active nodes. But everything has come back on track now and the number of unconfirmed transactions has also reduced a lot.

Bank server are always vulnerable to attacks. Last year, the central bank of Bangladesh had lost a lot of money which they recovered later. Barclay's servers are no exception. However, these are temporary and will not have long lasting effect on customers hopefully.