[6] Silber grew up in Atlantic Beach, New York and attended Lawrence High School, where he was the president of the student government.

[7] In 1993, after graduating from the University of Pennsylvania, Silber joined The Carson Group, a start-up capital markets intelligence consulting firm.

There, Silber created an industry specific consulting practice focused on capital markets intelligence, corporate finance and the biotechnology sector.

Silber and his partners sold The Carson Group and Evolution Capital to Thomson Financial in September 2000[9][10] and stayed on board to manage the transition process following merger through 2002.

He supervised the research, collection and analysis for the Intelligence Division's entire portfolio of ongoing terrorism related investigations.

[18][19] Since 2017, Silber has worked with a former adversary, Jesse Morton, a one-time Columbia University student who had "fled to Morocco, was caught by local authorities, extradited to the U.S. and sentenced to 11+1⁄2 years in prison in 2012 for conspiring to solicit murder."

Silber is a founding partner of the intelligence and security firm, The Guardian Group, with former NYPD Police Commissioner, Raymond W. Kelly.