Final answer:
BlackBerry uses AES (Advanced Encryption Standard) for securing data on its devices, which is recognized for its strong encryption capabilities.
Step-by-step explanation:
The type of security that BlackBerry has historically used is AES (Advanced Encryption Standard). This encryption protocol is well-known for its robustness and is widely used across various secure platforms. While BlackBerry might also support other security measures, AES is one of the primary encryption standards used to protect communication and data on BlackBerry devices.