Recently, many people ask me what CDD means and why companies care so much about it. I decided to write a bit more about this topic because it’s really worth understanding.

CDD is short for Customer Due Diligence, meaning data regarding proper due diligence toward the customer—in other words, the information we must collect and verify in order to comply with AML regulations. Every serious company in finance has to do this.

When I talk about CDD data, I mean quite a few things. The basic data are first name, last name, address, date of birth, and nationality. That’s the minimum the law requires. But that’s just the beginning. For more high-risk customers, we also collect the PESEL number, passport number, employment history, or source of income. Some companies go even further and collect additional CDD data depending on the risk profile.

What is all of this for? Mainly to assess whether the customer is involved in money laundering or other financial crimes. Based on this data, we decide whether to open an account for them and how intensely to monitor them. This isn’t paranoia—it’s a necessity.

In practice, we collect CDD data in several ways. Most often, we ask customers to fill out a form. Sometimes we do it through online questionnaires or we verify the information in public registries. Everything must be properly documented.

Of course, the security of storing this data is crucial. Companies must use secure databases, implement access controls, and ensure compliance with regulations. One leak and we have a serious problem.

Interestingly, the importance of CDD data is growing. As financial crime develops, companies collect and verify more and more information. This is a trend that will keep going. AML regulations are becoming increasingly stricter, and compliance is no longer optional—it’s an obligation.

To sum up—CDD is the foundation of a secure business in finance. By collecting and verifying this data, we protect both ourselves and our customers. If you work in fintech or crypto, you need to understand this. It’s not bureaucracy for bureaucracy’s sake—it’s real protection against financial crime.