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

An Amazon Phishing Scam Hits Just In Time For Prime Day

Amazon has confirmed that Prime Day 2019 will begin at 12 a.m. PT on Monday, July 15 and conclude at 11:59 p.m. PT on Tuesday, July 16.

TrickBot Malware May Recently Have Hacked 250 Million Email Accounts

Endgadged reported that "TrickBot malware may recently have stolen as many as 250 million email accounts, including some belonging to governments in the US, UK and Canada. The malware ...

[Heads-up] New eCh0raix Ransomware Strain Targets NAS Devices

ITPro Today reported: "The eCh0raix ransomware uses a brute-force credential attack to gain access to data stored in QNAP NAS devices.

Pay or Not Pay the Ransom? What’s Your Opinion?

The debate over whether to pay or not to pay the ransom once your system is encrypted is heating up. Yesterday, the US Conference of Mayors approved a resolution coming down in favor of ...

Effects of Ransomware Don’t End With the Ransom

A Florida city is still struggling to recover from a ransomware attack two weeks after the city paid the ransom, according to the New York Times. The attack began after a city employee ...

U.S. Coast Guard Warns Shipping Industry on Cybersecurity. Are You Next?

Kim Nash wrote in the WSJ Cybersecurity newsletter: "Avast! Pirates are getting better with cyber weapons on the high seas, WSJ Pro’s James Rundle reports. Maritime freight operators must ...

Homeland Security Warning About Phishing As A Threat to 2020 Elections

The US Department of Homeland Security is warning state election officials that phishing attacks are one of the greatest threats to watch out for as the 2020 elections approach.

Automated Tailored EBAY Spam Campaign Leads to Risky Sites

Automated spam on eBay is spreading tailored phishing messages offering to promote users’ products, and the links the spammers share can lead to dangerous websites, according to Paul ...

Cybersecurity Remains a Top Priority During M&A Diligence

M&A is no longer just about revenue, assets, and intellectual property; many organizations are increasingly worried about cybersecurity posture and risk, requiring appropriate ...

The Stock Market Doesn’t React Well to Data Breaches

The latest data from UK-based research firm, Comparitech, shows that organizations who suffer a data breach continue to suffer in the stock market well after.