Final answer:
Dion Training uses a technique called key stretching to increase the security of passwords.
Step-by-step explanation:
The technique used by Dion Training to increase the security of passwords is called key stretching.
Key stretching involves using a salt (a random value unique to each password) and a cryptographic hash function (such as SHA-256) to repeatedly hash the password. This process is performed multiple times (often thousands or even millions) to make it computationally expensive for attackers to guess the original password.
By using key stretching, Dion Training is making it much harder for attackers to crack passwords through brute force or dictionary attacks.