Hacker Sijmen Ruwhof, an Ethical Hacker, and IT Security Consultant, reviewed the security of one of the Denmark’s Largest Bank, Danske Bank, in a blog post. He found a security hole in the security hole at the Danish bank’s web site. The vulnerabilities were reportedly patched within 24 hours, and reportedly the vulnerabilities were got patched within the 24 hours. After 12 days, the Bank acknowledged Rowhof that he almost went into the coma, as the Bank thanked him for reporting about a potential vulnerability.
Source: https://thehackernews.com/2015/10/hack-danske-bank.html