The protests in the Middle East tested Jeremy Kroll, son of investigations entrepreneur Jules Kroll, and his expansion of K2 Intelligence into the region.
Anthony Casalena's Squarespace was a one-man operation when, late one Friday night, hackers shut down thousands of sites the company hosted.
First-time entrepreneur Joe Cohen talks about what to do when Launch Day inevitably doesn't go according to plan.
First-time entrepreneur Adam Rich describes a time when leading Thrillist, his men's lifestyle site, seemed too emotionally fraught to sustain.
Pressured to grow, AfterCollege CEO Robert Angulo chose his company over friendship.
When credit rating agencies came under fire for their role in the 2008 financial crisis, Jules Kroll, the corporate-investigations pioneer, saw a business opportunity.
Twilio, software for app developers, sought funding just as the 2008 financial crisis hit. Co-founder Jeff Lawson's response: "Screw it."
When Jose Ferreira's first company failed, he thought he would never start another one. But then he launched Knewton, which makes online education tools.
Intuit founder Scott Cook tells what went wrong the first time he rolled out the company's Quicken tax prep software around the world.
Herb Greenberg, who lost his sight at age 10, developed a test to help employers see workers for who they really are. But four months after founding HR consultancy Caliper, Greenberg had failed to win a single client.
Jessica Scorpio struggled for years to get her company, Getaround, off the ground, largely due to one massive roadblock.
When the infomercial company Beachbody introduced a set of fitness DVDs called P90X in 2005, the product bombed. Carl Daikeler explains how he turned it into $700m in sales.
Herb Greenberg, who lost his sight at age 10, developed a test to let employers see workers for who they really are.
Dana White, President of Ultimate Fighting Championship, decided to fight back when hacker group Anonymous attacked his company.
When David Williams took over Fishbowl in 2004, he thought the job would be easy sailing. Boy, was he in for a few surprises.
Julia Hartz, a co-founder of the online ticket seller, explains how it has sold more than 60 million tickets since 2006.
Charles Forman founded Omgpop, and left in 2011. CEO Dan Porter ran the company through producing its big hit, Draw Something, and sale to Zynga for $180 million. They tell their stories.
After a vicious attack, Save the Date founder Jennifer Gilbert not only moved on, she also built a $30 million business.
Yaron Galai was a reserve naval officer in Israel when he founded his fourth company, Outbrain. That's why he found himself negotiating from the trenches.
The founders of WinesTilSoldOut.com, Elliot and Joseph Arking, explain how they did it.