Such claims really annoy me. As if their precious credit cards haven't been hacked many times before.
Do not be annoyed, they just used that line to convey how Goldman Sach's action is good to the public eyes. It also shows that people doesn't invest into btc mainly because of them thinking that btc can be hacked easily. Let it pass for now, at least crypto got another good public exposure, I am sure his plan will be the one of the key points for bitcoin to be mainstream in the future.