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

New Instagram Support Phishing Attack Fakes “Unusual Logon” Experience Well Enough to Fool Victims

Long gone are the days of tacky landing pages that barely impersonate a brand; threat actors are improving their social engineering game well enough to make anyone believe it’s the real ...

Image-Based Phishing and Phone Scams Continue to Get Past Security Scanners

Using the simplest tactic of not including a single piece of content that can be considered malicious, these types of scams are making their way to inboxes every single time.

World Cup Phishing Attacks Doubled And Will Increase

Researchers at Trellix revealed that phishing email attacks targeting users in the Middle East doubled in October 2022 ahead of the World Cup in Qatar, as reported by The Record. The end ...

MFA Fatigue Attacks

Researchers at Specops Software describe a technique attackers are using to bypass multi-factor authentication (MFA). In an article for BleepingComputer, the researchers explain that ...

4 out of 10 Emails are Unwanted as nearly 40% of all Attacks Start with Phishing

New data focused on emails sent through Microsoft 365 highlights the methods used to ensure a successful attack beginning with a malicious email.

10 Million Health Records from Australian Insurer Medibank are Leaked After Refusing to Pay the Ransom

The aftermath of a ransomware attack last month demonstrates just how bad an attack can get when the cybercriminals don’t get what they want.

Over One-Third of Companies Who Pay the Ransom are Targeted for a Second Time

Despite the somewhat logical notion that once you’ve paid the ransom, the attack is over, new data shows that paying the ransom doesn’t help you anywhere near how much you think it does.

Retailers: Credential Harvesting Attacks Are the “Big Thing” This Year for the Holiday Season

New data polled from analysts and members of the retail industry about their security focus is this holiday season reveals the kinds of attacks every organization should be preparing for.

This New Phishing Kit Flies Under the Radar of Antivirus Software

Akamai researchers have discovered a new phishing campaign that targets United States consumers with fake holiday offers, TechRadar reports. Fake landing pages created by threat actors ...

Phishing Attacks Misuse Microsoft Dynamics 365 Customer Voice Functionality to Hide Malicious Links

Leveraging a legitimate feature of Dynamics 365, threat actors are able to obfuscate the malicious nature of the email within content that naturally requires user interaction.