Noel Biderman (born 1971) is a Canadian Internet entrepreneur. The self-proclaimed "King of Infidelity", Biderman is the former CEO of Avid Life Media and was the Founder and Chief Executive of parent company extramarital affair website Ashley Madison.
Biderman is a former lawyer and sports agent.
Biderman started Ashley Madison in 2001, in Canada. The company slogan is "Life is short. Have an affair." Responding to critics, Biderman says that Ashley Madison does not promote infidelity, "We're just a platform. No website or 30-second ad is going to convince anyone to cheat. People cheat because their lives aren't working for them."  He has said that he writes the commercials for his company (which have featured two attractive people in the throes of passion, and then the sign: "This couple is married...but not to each other"), which the LA Times called "hilarious." Biderman marketed Ashley Madison as having a focus on married women, instead of married men. "I was very confident that men would gravitate towards a service to conduct these otherwise anonymous affairs. They were seemingly doing it already," Biderman told BusinessWeek. "I was much less confident that women would behave that way." Biderman's concern was confirmed in the data breach of 2015 which revealed that less than 1% of the female users were ever active on the site, the 5 million accounts held by women "show so little activity that they might as well not be there".
In the summer of 2015, the Ashley Madison website was hacked and sensitive information of millions users was released publicly. Biderman was accused by the hackers of failing to delete accounts from the website even after customers paid to have accounts removed. Biderman's emails were also released. In the wake of the hack, Biderman voluntarily stepped down as CEO of the company on August 28, 2015.
Biderman has appeared on The Tyra Banks Show, The View, Larry King Live, GluckRadio and Rogers TV's Daytime York Region. Biderman also served as a judge for the Miss Tiger Woods mistress pageant on The Howard Stern Show, which was sponsored by Biderman's Ashley Madison.
In an interview with comedian Amy Schumer, Biderman states that wives gaining weight "is a legitimate reason" for husbands to seek sex outside their marriages. He told Australia's "A Current Affair" program that if he found out that his own wife was accessing his cheater's site, "I would be devastated."
Noel Biderman is a native of Toronto, Canada, and holds a law degree from York University's Osgoode Hall Law School. Biderman was born Jewish and had a bar mitzvah. His grandparents were Holocaust survivors and he has stated that he looks forward to his son's bar mitzvah. However as an adult he is not particularly religious and believes that The Ten Commandments are outdated. He is the author of a book titled Cheaters Prosper: How Infidelity Will Save the Modern Marriage.
- Daum, Meghan (2009-01-10). "Ashley Madison's secret success - Los Angeles Times". Articles.latimes.com. Retrieved 2010-05-03.
- Biderman, Neil. "Noel Biderman - The King of Infidelity". Retrieved 24 August 2015.
- "Ashley Madison founder steps down". BBC News. 28 August 2015.
- "Cheats' site a popular affair - Connect - NZ Herald News". Nzherald.co.nz. 2010-04-18. Retrieved 2010-05-03.
- Sheelah Kolhatkar (February 10, 2011). "Cheating, Incorporated". Businessweek. Retrieved 18 February 2011.
- Caplan, Jeremy (2009-06-29). "Cheating 2.0: New AshleyMadison Apps Make Adultery Even Easier". TIME. Retrieved 2010-05-03.
- Newitz, Annalee (27 August 2015). "The Fembots of Ashley Madison". Gizmodo. Retrieved 28 August 2015.
- Reed, Brad (27 August 2015). "The most hilarious revelation about the Ashley Madison hack yet". Yahoo! Tech. Retrieved 28 August 2015.
- "Hackers dump SECOND, even bigger batch of Ashley Madison records with taunting message to millionaire founder of 'cheating dirtbag' site". DailyMail. August 21, 2015. Retrieved 21 August 2015.
- "Ashley Madison: Boss's emails examined after leak - BBC News". Bbc.com. Retrieved 2015-08-28.
- "Ashley Madison CEO steps down in wake of hacking". Yahoo News. Retrieved August 28, 2015.
- "The Tyra Banks Show — Ashley Madison". YouTube. 2008-11-21. Retrieved 2010-05-03.
- "The View Hot Topics — Ashley Madison". YouTube. 2009-04-30. Retrieved 2010-05-03.
- "CNN.com — Transcripts". Transcripts.cnn.com. 2008-03-17. Retrieved 2010-05-03.
- "Episode 25: Where To Go For an Affair". Podomatic. 2012-12-07. Retrieved 2012-12-07.
- Wisniewski, Angela. "Ashley Madison | Features". Real Detroit Weekly. Retrieved 2010-05-03.
- Stahler, Kelsea. "Amy Interviews AshleyMadison Creator Noel Biderman On 'Inside Amy Schumer' & Completely Takes Him Down With Subtlety". Bustle. Retrieved 24 August 2015.
- Elis, Niv (22 May 2014). "Cheating on your spouse in Israel just got easier". Jerusalem Post. Retrieved 24 August 2015.
- Angel, Ilana (March 30, 2011). "Ashley Madison & Noel Biderman: Will a Rabbi Take Them On?". Jewish Journal. Retrieved 29 December 2014.