In 2020 we live in an era in which cyberattacks are becoming more complex and persistent. Cybersecurity is the new front for hostilities. In this context, the ECB plays a key role, ensuring the financial stability of the financial system and enhances its cyber resilience. As a result, in 2018 the ECB published TIBER-EU, red ethical hacking teams based on operational threat information. The tests are conducted by financial institutions, who hire ethical hackers for simulated attacks against them, so that these institutions can identify their weaknesses and make improvements for the future. This is ethical hacking..