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

KnowBe4 and Okta Update

To start off, we do not use Okta in any of our products.

Buy Now, Pay Later Scams

Fraudsters are taking advantage of the buy-now, pay-later (BNPL) payment model, according to Jim Ducharme, COO of Outseer. On the CyberWire’s Hacking Humans podcast, Ducharme explained ...

WIRED: "A Mysterious Satellite Hack Has Victims Far Beyond Ukraine"

WIRED wrote: "More than 22,000 miles above Earth, the KA-SAT is locked in orbit. Traveling at 7,000 miles per hour, in sync with the planet’s rotation, the satellite beams high-speed ...

Fidelity: "Why cybersecurity is material to all industries"

Fidelity just published an article titled "Cybersecurity: A growing risk". They note that the threat of Russian cyberattacks highlights vulnerabilities across industries. I'm quoting a ...

Repertoire of Ukraine Charity Phishing Scams

Scammers continue to exploit the crisis in Ukraine, according to researchers at Bitdefender. Over the past week, the researchers believe the fraudsters have adjusted their tactics in ...

Initial Access Broker Group Relies on Social Engineering

Google’s Threat Analysis Group (TAG) describes a cybercriminal group it calls “EXOTIC LILY” that acts as an initial access broker for numerous financially motivated threat actors, ...

Number of Phishing Attacks Hits an All-Time High in 2021, Tripling That of Early 2020

New data from the Anti-Phishing Working Group shows cybercriminals are stepping on the gas, focusing phishing attacks on credential theft and response-based scams.

Phishing Attack-Turned-Wire Fraud Case Sees a Win for the Policyholder

In an unusual turn of events, a recent court decision sided with the policyholder, despite specific policy language that probably should have favored the insurer.

QakBot Banking Trojan Evolves and Now Takes Over Email Conversations to Spread Malware

As if stealing all your credentials, cookies, and email wasn’t bad enough, this new version of QakBot inserts itself into your emails, impersonating you to gain access to more victims.

Phishing Scam with Fraudulent Invoice Costs City of Fresno Over $600,000

This simple invoice scam appears to be a part of a much broader campaign targeting municipalities, posing as existing subcontractors.