Adam Braxton is an agent with CERT/CC.
The acronym stands for the Computer Emergency Response Team which is a division of the American Intelligence community dedicated to tracking down cyber-terrorism and stopping it as well as strengthening the security of the Internet as every day brought new and innovative ways from the black hat hackers to cause trouble or worse.
Originally CERT, now CERT Coordination Center (or CERT/CC), was created back before the days of the Internet, around the year 1988 when it was discovered a college student had put a backdoor into Arpanet, the precursor to the Internet, and infected thousands of computers attached to the network and bringing the system to a halt. DOD's DARPA, working with the NSA, created CERT as a means of watching out for other such crafty intrusions onto the system and when the Internet came along, CERT's area of protection widened considerably.
Braxton is a cyber-security expert and has been one for some time. When we first meet him, he is looking for work with his bank account looking sparce, all due to an unpleasant divorce. That is when a call from CERT came in offering contractual work.
Braxton may be a whiz at the computer but he does not look like a 'typical' geek. He stands 5'11" weighing 165 pounds on a body that is strong and taut. He is considered quite good looking and sports sandy brown hair "still thick and curly" as well as having pale green eyes. He also does not act like a nerd who spends all of his time at the keyboard, enjoying sports of various kinds and spending a lot of time rock climbing, though the latter still amazes him that he enjoys it and puts up with the considerable scrapes and bruises his body endurs doing it.
He probably would not say that he enjoys the many hardships his body withstands as he gets a lot closer to the bad guys than most security personnel. Or perhaps the bad guys just naturally head to get him. Either way, it invariably results in a lot of action and excitement and numerous ways Braxton can find to nearly get dead.