"Financial institutions operate within a multi-layered and hugely complex digital ecosystem," Lindsay said. "Tracking and ensuring that all parts of this system evidentially comply with the relevant elements of DORA will require a new mindset, solutions and resources."
Banks are also adding higher levels of scrutiny in their contract negotiations with tech suppliers due to DORA's strict requirements, Jang said.
The Cisco chief privacy officer told CNBC that he thinks there is alignment when it comes to the principles and the spirit of the law. However, he added, "any legislation is a product of compromise and so, as they get more prescriptive, then it becomes challenging."