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

Phishing and Redirection

Researchers at Check Point have observed a phishing campaign that, to avoid detection, abused servers belonging to Adobe, Samsung, and the University of Oxford. The attackers used several ...

[HEADS UP] Sodinokibi Ransomware Strain Learns New Trick

Already one of the most dangerous forms of ransomware, now Sodinokibi looks like it could also be attempting to make money from stolen payment information too.

Slack Phishing

People need to be able to use their instincts in order to spot new phishing techniques, according to Ashley Graves, a Cloud Security Researcher at AT&T Alien Labs. On the CyberWire’s ...

How to Combat the Fake News and Disinformation Being Used to Attack Your Organization

A global cold war is being fought in cyberspace, and IT pros like you are finding themselves in the trenches. With all of this going on, how can you equip your employees and protect your ...

Pyongyang's Phishing with Job Offers

An attack campaign with possible ties to North Korea’s Lazarus Group targeted aerospace and military companies in Europe and the Middle East with spear phishing attacks late last year, ...

Microsoft 365 to Provide Detonation Details About Malicious Email Content

In a step towards educating customers on why attachments and URLs are deemed “malicious”, Microsoft’s is set to augment its Advanced Threat Protection product in July.

Microsoft Warns of New Java-Based “PonyFinal” Ransomware Used as Part of Human-Operated Attacks

Microsoft’s recent posts detailing a new Java attack that uses PowerShell and other legitimate tools to infect victims with ransomware sheds light on human-operated attacks.

WARNING: The List of Ransomware-Turned-Data Breach Operators is Getting Long

Seeing a better opportunity to generate more “revenue” from their victims, the idea of ransomware also exfiltrating data to be used to extort the payment is gaining steam.

[Heads Up] North Korean State Hackers Plan a June 21 COVID-19 Phishing Attack That Targets 5 Million in Six Nations

ZDNet reported: "Singapore, Japan, and the US are amongst six nations targeted in a COVID-19 themed phishing campaign that is reportedly scheduled for June 21, during which 8,000 ...

[Heads Up] Australian Government and businesses hit by massive cyber attack from ‘sophisticated, state-based actor’

News.com.au reported that Australian Prime Minister Scott Morrison has "announced in an urgent press conference called this morning in Canberra, Mr Morrison said the ongoing, ...