IBM is developing a virtual brain called Blue Brain that could be the world's first virtual brain. Blue Brain would function like a human brain by thinking, making decisions, and storing memories. Researchers aim to upload the human brain into this virtual brain using nanobots, allowing one to live on digitally after death. This could preserve human intelligence and knowledge for further development. However, becoming reliant on computer systems may introduce new vulnerabilities like viruses that could harm or control virtual brains.