I didn't say easy to access bank details - that was obviously something deeper. I merely said spoofing the number the text came from - a quick google search will show you how it is doneHow did the scammers use the banks text number to send the messages. If they were able to get the banks details to do so that is a serious breach of BOI security.
Some posters suggest that it is a simple matter to send a text from one number that appears to come from another.
I don't find this convincing, if it were a simple matter that could be done without access to the banks details, surely it would happen more often.