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

Cyber Insurers Focus on Catastrophic Attacks and Required Minimum Defenses as Premiums Double

Recent attacks are helping cyber insurers better understand what security strategies need to be in place and how to price policies based on the risk those policies cover.

Archives Overtake Office Documents as the Most Popular File Type to Deliver Malware

Taking the lead over the use of Word, Excel, PDF, and other office-type documents in attacks, new data shows that files like ZIP and RAR have grown in popularity by 11% last quarter.

[On-Demand] Ransomware, Ransom-war and Ran-some-where: What We Can Learn When the Hackers Get Hacked

Ransomware strikes organizations almost every two seconds. Tales of bad actors doing their worst fill the InfoSec news cycle, but what happens when the hackers get hacked?

Russian Threat Actor Impersonates Aerospace and Defense Companies

A Russia-linked threat actor tracked as TAG-53 is running phishing campaigns impersonating various defense, aerospace, and logistic companies, according to The Record by Recorded Future. ...

CyberheistNews Vol 12 #49 [Keep An Eye Out] Beware of New Holiday Gift Card Scams

CyberheistNews Vol 12 #49 | December 6th, 2022 [Keep An Eye Out] Beware of New Holiday Gift Card Scams By Roger A. Grimes Every holiday season brings on an increase in gift card scams. ...

Credential Phishing with Apple Gift Card Lures

A phishing campaign is impersonating Apple and informing the user that their Apple account has been suspended due to an invalid payment method, according to researchers at Armorblox.

Inside NATO’s Efforts To Plan For A Future Cyberwar

Maggie Miller at Politico had the scoop: "TALLINN, Estonia — Some 150 NATO cybersecurity experts assembled in an unimposing beige building in the heart of Estonia’s snow-covered capital ...

New Threat Group Already Evolves Delivery Tactics to Include Google Ads

Delivering an equally new Royal ransomware, this threat group monitored by Microsoft Security Threat Intelligence has already shown signs of impressive innovation to trick victims.

Latest Netflix-Impersonated Phishing Attacks Surge in Frequency by 78% Since October

Using a mix of invisible and lookalike characters, this phishing attack attempts to get past security scanners by obfuscating both email content and domain names.

It’s Official: COVID-related Phishing is Dead as Scammers Return to Impersonating Famous Brands

New analysis of spam and malicious emails show the all but nonexistence of COVID-esque impersonation of government and pharm entities in lieu of international brands.