[3] He ran a tour company that took westerners to North Korea via China and has spent significant time in the country.

[4][5] In 2007 Harbinger worked on mortgage-backed securities for a Wall Street firm[6] and was laid off after approximately a year due to the 2007 financial crisis.

[6][7] In 2010 an app was launched, and by 2011 Harbinger had a radio talk show called Game On on both Sirius and XM Satellite that aired on Friday nights.

[11] In 2013 Harbinger demonstrated at DEF CON how easily a person can be manipulated into divulging information to someone who may not be what they claim to be,[12] based on the Robin Sage experiment of 2010.

[31] He is a recurring guest on The Adam Carolla Show[32] and in 2021 signed a "high seven-figure" renewal deal on the PodcastOne network.