KnowBe4 Blog

Keeping you informed. Keeping you aware.
Stay on top of the latest in human and agent security including social and prompt engineering, ransomware and phishing attacks.

Stu Sjouwerman

Founder and Executive Chairman

Stu Sjouwerman (pronounced “shower-man”) is the Founder and Executive Chairman of KnowBe4, Inc., which hosts the world’s most popular integrated security awareness training and simulated phishing platform, with over 54,000 organization customers and more than 50 million users. A serial entrepreneur and data security expert with 30 years in the IT industry, Stu was the co-founder of Inc. 500 company Sunbelt Software, a multiple award-winning anti-malware software company that was acquired in 2010.


Recent Posts

Cyberattacks Targeting State and Local Government Increase by 50%

State, local, tribal, and territorial government agencies and municipalities are under attack. Observations and data from security vendor BlueVoyant highlight the attacks and the results.

60% of the US Workforce Will Be Working Remotely by 2024 (and That’s a Problem)

The latest data from analyst firm IDC shows massive growth in the remote workforce in the coming years – something that puts organizations at greater risk for a cyberattack.

Tribune Publishing apologizes for fake bonus offer in phishing-simulation email

Yesterday at the end of the day, I was called by our PR team who got alerted by tech support about a Twitter post that was going viral. Turns out a custom phishing test created by one of ...

Abusing App Engine to Automate Phishing

Attackers can abuse a feature in Google App Engine to generate unlimited phishing URLs, BleepingComputer reports. Security researcher Marcel Afrahim found that App Engine URLs that ...

Which Users in Your Organization Put You at Risk?

October is National Cybersecurity Awareness Month, so it's a perfect time to fortify your human firewall. Start by identifying which users may be putting your organization at risk before ...

KnowBe4 Receives a 2020 Tech Cares Award

Sticking to our values continues to pay off, as we have recently received a Tech Cares award from TrustRadius. This is a brand-new award crafted to celebrate organizations that have ...

Five Alarming Approaches to Extortion

People should familiarize themselves with common forms of extortion in order to avoid falling victim to these attacks, according to Amer Owaida at ESET. Ransomware might be the most ...

Credential Stuffing to Stuff the Ballot Box

Advanced nation-state actors and petty criminals are both leveraging credential-stuffing attacks to hack into victims’ accounts, according to Byron Acohido, writing for Avast. Rather than ...

Credential Stuffing Used Against Financial Services

A security alert from the FBI warns that hackers are launching credential-stuffing attacks against organizations in the financial sector, ZDNet reports.