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

Stolen Devices and Phishing

Researchers at Cyren describe a phishing attack that resulted from the theft of a stolen iPad. The iPad was stolen on a train in Switzerland, and briefly appeared on Apple’s location ...

[APPLY TODAY] Security Awareness Training Eligible for $185 Million DHS Cybersecurity Grant Opportunity

The Department of Homeland Security (DHS) is providing $185 million of grant money this year to U.S. states and territories to bolster their cybersecurity defenses, which includes ...

KnowBe4 Top-Clicked Phishing Email Subjects for Q3 2022 [INFOGRAPHIC]

KnowBe4's latest quarterly report on top-clicked phishing email subjects is here. We analyze 'in the wild' attacks reported via our Phish Alert Button, top subjects globally clicked on in ...

Don’t Let High-Tech Distract You from Low-Tech

Deepfakes, the realistic and thoroughly convincing fabrication of imagery, video, and audio that fakes the identity of some person in ways that are difficult to detect, have aroused ...

[Eye Opener] Work In IT? You Get Attacked Much More Than Other Employees

We received an interesting email from Elevate Security you need to be aware of. Their recent research showed: "Social engineering attacks are growing more sophisticated every day, ...

Major UK Outsourcer Hit With Multi-Million Dollar Fine Due to a Phishing Attack

Britain's data watchdog has fined major construction group Interserve with a £4.4m fine. This was due to a cyber attack stole personal and financial details for over 113,000 employees and ...

Phishing for Student Email Accounts

University student accounts are being exploited for business email compromise. Researchers at Avanan have observed a rise in attacks that compromise legitimate college student accounts in ...

BazarCall Expands Callback Phishing Campaigns to Include More Support Sites and Malicious Tactics

The king of callback phishing campaigns has evolved their methods to include better phishing emails, phone call scams, and final payloads to ensure they achieve their malicious goals.

New Credential Harvesting Scam Impersonates Google Translate to Trick Victims

In an interesting twist, this latest scam identified by security researchers at Avanan attempts to establish legitimacy by making the victim think the logon page is being translated.