Possible Clues:

• Security expert's hair thing that's not real, by all accounts
• Fable about smoked salmon?
• Philosopher cited before economist as specialist in security?
• The better he is, the less likely people will pick his work
• Make Oscar winner Maggie secure?
• Door man -- or hairdresser?
• One who makes or mends fastening devices
• Security person with hairy bits at the front of University Hospital