This was taken from their own website.
A cyber workforce of special agents and forensic analysts dedicated to conducting advanced computer, mobile device, and vehicle infotainment systems forensic examinations using specialized methods, software and equipment. These experts work hand in hand with our law enforcement partners. The strategically positioned Secret Service DEFLs provide the necessary environment and tools for our cyber forensics teams to identify and secure criminal evidence for prosecution.
https://www.secretservice.gov/investigation/forensic