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

Yesterday, in DC, I was given the Holland on the Hill Freddy Heineken Award

The Holland on the Hill Freddy Heineken Award honors an entrepreneur who has made a substantial and positive contribution to the US-Dutch economic relationship, exemplifying the best of ...

Water Facilities Compromised By Iranian Threat Actors

In December 2023, a joint alert was issued by the FBI, CISA, NSA, EPA, and INCD regarding Iranian cyber actors known as "CyberAv3ngers" linked to Iran's Islamic Revolutionary Guard Corps ...

Top Tax Scams of 2024 Your Organization Should Watch Out For

As the April 15, 2024 filing deadline approaches, tax scammers are working overtime to take advantage of rushed or stressed taxpayers.

Malvertising Campaigns Surged in 2023

Researchers at BlueVoyant observed a 50% increase in large-scale malvertising campaigns in 2023 compared to 2022.

New Phishing-as-a-Service (PhaaS) platform, 'Tycoon 2FA', Targets Microsoft 365 and Gmail Accounts

A new PhaaS service brings the power of bypassing multi-factor authentication (MFA) to the world’s most-used email platforms.

All The Ways the Internet is Surveilling You

Your personal information is continuously harvested and analyzed by countless data brokers eager to sell to the highest bidder. From your name to your online activities, to your ...

Australian Government Commits to Become a World-Leader in Cybersecurity by 2030

The Australian Government has leveraged insight from cybersecurity experts to create a new six-part plan to combat cybersecurity over the coming decade.

Tokyo Police Department Warns of Phishing Scam That Uses Phony Arrest Warrants

The Tokyo Metropolitan Police Department has warned of a phishing scam that’s attempting to trick individuals with phony arrest warrants, the Japan Times reports.

Large-Scale StrelaStealer Campaign Impacts Over 100 Organizations Within the E.U. and U.S.

A new campaign of StrelaStealer attacks identified by security analysts at Unit42 has been spotted targeting E.U. and U.S. organizations. This somewhat new infostealer has evolved to be ...

Catfishing Campaign Targets Members of the UK Government

At least twelve men working in the UK parliament have recently been targeted by WhatsApp spear phishing messages, POLITICO reports. The targeted individuals include “a senior Labour MP, ...