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

How Sharing Personal Information Helps Scam Artists

The FBI's Charlotte office released an alert describing how scammers can use personal information on social media to break into online accounts, BleepingComputer reports. As people are ...

Phishing Kit Prices Rise

The price of phishing kits on the black market rose by 149% in 2019, according to researchers at Group-IB. ZDNet reports that the researchers tracked the pricing of 16,200 phishing kits ...

COVID-19 Emails go From Zero to Half a Million a Day in Just Three Months

According to new data from security researchers at Forcepoint, the interest in coronavirus-themed emails and websites by cybercriminals is cause for concern.

German Health Authorities Lose €1.5 Million in COVID-19 Mask Purchase Scam

Reaching an all-new low, an international team of individuals setup an elaborate online scam taking advantage of the current need for healthcare equipment to fight COVID-19.

Apple, Netflix, and Yahoo Were the Most Impersonated Brands in Q1 2020

10% of all brand-impersonation phishing attacks spoofed Apple in the first quarter of 2020, according to a new report from Check Point. Netflix came in second with 9%, followed by Yahoo ...

[HEADS UP] DHS Deadline Notice of 56 Million Security Awareness Training Funding Opportunity

The Department of Homeland Security is providing $56,000,000.00 of grant money to states for cybersecurity and security awareness training.

New COVID-19 Malware Variants Render Your Endpoints Useless

Forget cybercriminals out to steal your money and credentials. Security researchers are now finding more malware intent on rewriting master boot records and wiping file systems.

Quarantine Text Scam Tricks U.K. Residents into Paying “Fine”

Because of the ambiguity of current lockdown restrictions, a new text scam pretending to be from the government feels a bit too real to U.K. residents, turning them into victims.

Zeus Sphinx Banking Trojan is Revived Under the Guise of COVID-19 Assistance

The 5-year old malware variant has reared its ugly head once again after a three-year hiatus – this time attempting to take advantage of the need for COVID-19 financial assistance.