"No one can show me a culture on the planet where infidelity doesn't happen," Biderman told AFP.
Jeffrey Jurist, whose website Spy sells a vast range of surveillance equipment said that individuals seeking to uncover adultery account for around one-third of the company's turnover.
Monogamy 'unfair' Jinky, a 29-year-old woman from Singapore, is a case in point.
She decided to pursue an affair after seeing an ad for the website
For millions, adultery via the Internet has become the new normal.
Since the launch of the Canada-based Ashley Madison website in 2002, which created a sensation with its seductive slogan "Life is short, have an affair," the numbers turning to online infidelity have soared.