• Home
  • Latest
  • Fortune 500
  • Finance
  • Tech
  • Leadership
  • Lifestyle
  • Rankings
  • Multimedia
FinanceCybersecurity

KKR Invests in Cybersecurity Firm KnowBe4 at $800M Valuation

Rey Mashayekhi
By
Rey Mashayekhi
Rey Mashayekhi
Down Arrow Button Icon
Rey Mashayekhi
By
Rey Mashayekhi
Rey Mashayekhi
Down Arrow Button Icon
March 1, 2019, 6:00 AM ET
KKR
Igor Golovniov/SOPA Images/LightRocket via Getty Images

Cybersecurity startup KnowBe4 has secured a minority investment from private equity giant KKR that values the firm at more than $800 million.

KKR is making an initial commitment of up to $50 million in KnowBe4, according to sources with knowledge of the transaction, with plans for an additional investment in the company already in the works. The deal is being made through KKR’s $711 million Next Generation Technology Growth Fund, which targets investments in software, security, digital media and information technology. KKR is teaming on the deal with cybersecurity-focused venture capital firm and frequent collaborator TenEleven Ventures.

The funds are expected to aid Tampa Bay, Florida-based KnowBe4’s ongoing international expansion and the development of its cybersecurity training platform, which helps companies combat phishing and other data breaches. The deal also represents KKR and TenEleven’s latest venture into the realm of cybersecurity—following previous investments in companies like software firm Cylance, which was acquired by BlackBerry for $1.4 billion in November, and artificial intelligence firm Darktrace, whose most recent funding round in September valued it at $1.65 billion.

“It was really clear to us that you have a [cybersecurity] market that is growing at a very high rate,” KKR director Stephen Shanley told Fortune. Shanley noted that while spending on cybersecurity solutions globally now approaches $50 billion a year, the number of cyber attacks and breaches continues to rise—with more than 90% of breaches caused by human errors such as “employees clicking on phishing links that they shouldn’t have.”

KnowBe4’s platform, in turn, is based on security awareness training that’s designed to build a “human firewall” against such attacks. “Think of a phishing email: it looks real, and bad actors have gotten so good at it that they can social-engineer. You’ll see an email that you think is coming from the original source,” according to TenEleven general partner Mark Hatfield. “KnowBe4 gives organizations the ability to train and educate their people to reduce that threat vector.”

The company’s financial performance has also been “truly exceptional,” said Shanley, who pointed to more than $120 million in bookings last year that drove 110% revenue growth year-on-year. “You don’t see that kind of growth,” he added.

KnowBe4 CEO Stu Sjouwerman, who founded the company in 2010, said the firm plans to use the injection of capital to grow its offices in Europe and launch new branches in Dubai and Singapore. KKR’s investment represents KnowBe4’s Series C raise; it follows an initial, $8 million Series A led by venture capital firm Elephant in 2016 and a $30 million Series B led by Goldman Sachs in 2017.

“Having KKR in our corner opens up their whole portfolio and list of contacts to us,” Sjouwerman said. “If you look at their portfolio of companies, there are some interesting strategic partnerships possible.”

Sjouwerman runs KnowBe4 with his business partner Kevin Mitnick, who he described as “the world’s most famous hacker” and who serves as the company’s chief hacking officer. Sjouwerman added that between the two of them, he and Mitnick own just over 50% of the firm.

About the Author
Rey Mashayekhi
By Rey Mashayekhi
LinkedIn iconTwitter icon
See full bioRight Arrow Button Icon

Latest in Finance

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025

Most Popular

Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Finance
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam
By Fortune Editors
October 20, 2025
Rankings
  • 100 Best Companies
  • Fortune 500
  • Global 500
  • Fortune 500 Europe
  • Most Powerful Women
  • Future 50
  • World’s Most Admired Companies
  • See All Rankings
Sections
  • Finance
  • Leadership
  • Success
  • Tech
  • Asia
  • Europe
  • Environment
  • Fortune Crypto
  • Health
  • Retail
  • Lifestyle
  • Politics
  • Newsletters
  • Magazine
  • Features
  • Commentary
  • Mpw
  • CEO Initiative
  • Conferences
  • Personal Finance
  • Education
Customer Support
  • Frequently Asked Questions
  • Customer Service Portal
  • Privacy Policy
  • Terms Of Use
  • Single Issues For Purchase
  • International Print
Commercial Services
  • Advertising
  • Fortune Brand Studio
  • Fortune Analytics
  • Fortune Conferences
  • Business Development
About Us
  • About Us
  • Editorial Calendar
  • Press Center
  • Work At Fortune
  • Diversity And Inclusion
  • Terms And Conditions
  • Site Map
  • Facebook icon
  • Twitter icon
  • LinkedIn icon
  • Instagram icon
  • Pinterest icon

Latest in Finance

BankingCEO salaries and executive compensation
Bank of America lifts Moynihan’s pay 17% to $41 million for 2025
By Katherine Doherty and BloombergFebruary 13, 2026
12 hours ago
Startups & VentureIPOs
SpaceX said to weigh dual-class IPO shares to empower Musk
By Ryan Gould, Edward Ludlow and BloombergFebruary 13, 2026
13 hours ago
broker
AISoftware
Marc Andreessen made a dire software prediction 15 years ago. Now it’s happening in a way nobody imagined
By Nick LichtenbergFebruary 13, 2026
14 hours ago
Personal FinanceSavings
How to build a CD ladder: Lock in high APY without losing complete access to your money 
By Joseph HostetlerFebruary 13, 2026
14 hours ago
Donald Trump shrugs as he stands behind the podium in the White House briefing room.
North AmericaTariffs and trade
90% of Trump’s tariffs are paid for by American consumers and companies, New York Fed says
By Sasha RogelbergFebruary 13, 2026
16 hours ago
Investingprivate equity
Exclusive:  The Walton family–funded PE firm that owns Rapha Cycling Club presses pause on all new investments
By Jessica MathewsFebruary 13, 2026
16 hours ago

Most Popular

placeholder alt text
Economy
Some folks on Wall Street think yesterday’s U.S. jobs number is ‘implausible’ and thus due for a downward correction
By Jim EdwardsFebruary 12, 2026
2 days ago
placeholder alt text
North America
‘I gave another girl to Kimbal’: Inside Jeffrey Epstein’s honey-trap plan targeting Elon Musk through his brother
By Eva Roytburg and Jessica MathewsFebruary 13, 2026
19 hours ago
placeholder alt text
Success
Actress Jennifer Garner just took her $724 million organic food empire public. She started her career making just $150 weekly as a ‘broke’ understudy
By Emma BurleighFebruary 13, 2026
19 hours ago
placeholder alt text
Commentary
Something big is happening in AI — and most people will be blindsided
By Matt ShumerFebruary 11, 2026
3 days ago
placeholder alt text
Economy
‘Nothing short of self-sabotage’: Watchdog warns about national debt setting new record in just 4 years
By Tristan BoveFebruary 11, 2026
3 days ago
placeholder alt text
AI
Microsoft AI chief gives it 18 months—for all white-collar work to be automated by AI
By Jake AngeloFebruary 13, 2026
17 hours ago

© 2026 Fortune Media IP Limited. All Rights Reserved. Use of this site constitutes acceptance of our Terms of Use and Privacy Policy | CA Notice at Collection and Privacy Notice | Do Not Sell/Share My Personal Information
FORTUNE is a trademark of Fortune Media IP Limited, registered in the U.S. and other countries. FORTUNE may receive compensation for some links to products and services on this website. Offers may be subject to change without notice.