Hey Karan, a Cyber Security Forensic Expert analyze a security breach to determine how it happened and try to collect the evidence to prove who would have committed the breach. You can also be asked to train the first responders to deal with any electronics such as computers, hard drives or portable drives. If any electronics are tampered with, your investigation might lose information or break the chain of evidence, rendering any evidence tainted and inadmissible in a court. A Forensic Expert is called in once a security breach has been discovered.