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

Healthcare Sector Still Sustains Phishing Campaigns

No one should take too seriously the high-minded things criminals sometimes say about how they’re restraining themselves during the pandemic, and that they’re going to avoid hitting ...

New Articles and Updates From the KnowBe4 Technical Content Team in Q3 2020

Each quarter, KnowBe4's Product Content Team creates a video that highlights the updates that have been made to KnowBe4’s products over the past quarter. This is a great way to stay ...

[Heads Up] Scam of The Week: Watch Out For Trump COVID Disinformation

The bad guys are going to have a ball with this one. President Trump announced that he and first lady Melania are COVID Positive. This event will be used in a variety of ways through ...

[Heads up] Paying Ransomware Criminals Might Land You A Steep Federal Fine

The US Treasury Department's Office of Foreign Assets Control (OFAC) has sanctioned multiple ransomware criminals over the last few years, most notably the Russian cybercrime syndicate ...

Interesting Mini-Movie On Disinformation From The FBI

The FBI and the National Counterintelligence and Security Center (NCSC) released a new movie to increase awareness of how foreign intelligence entities use fake profiles and other forms ...

Newly Relaunched ProLock Ransomware Seeks Ransoms as High as $3 Million

Seeing successful attacks as frequently as one per day, the creators of ProLock seek out larger organizations using the QBot trojan to infiltrate, spread throughout, and infect a network.

Global Ransomware Attacks Increase by 715 Percent as Cybercriminals Capitalize on the Pandemic Opportunity

The massive rise in frequency is a signal that cybercriminals are not only finding their ransomware campaigns successful, but are also seeing increases in ransom amounts.

Two Men Charged in a Case of Phishing NFL and NBA Players

The US Department of Justice has charged two men for allegedly hacking social media and other accounts belonging to NFL and NBA players, Mashable reports. Trevontae Washington, 21, of ...

Don't Just Catch a Phish, Captcha One

Researchers at Menlo Security have identified a phishing site that uses three layers of visual captchas to evade detection by automated security crawlers. Captchas are brief tests on ...

[CRITICAL] 250,000 Microsoft Exchange Servers are Unpatched and Vulnerable to Remote Code Execution Attacks!

With an estimated 61% of Exchange servers in the wild still operating unpatched, this security flaw allows attackers to take over a vulnerable server using any set of valid email ...