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

North Korean Threat Actor Targeting Cybersecurity Researchers With Spear Phishing Attacks

A suspected North Korean state-sponsored threat actor called “ScarCruft” is launching spear phishing attacks against cybersecurity professionals, according to researchers at SentinelOne.

Myth of Massive Data Breach Busted: Big Headlines Mask a Minor Threat

Ok, I'll admit it, I was swept up in the moment last week and wrote a short blog post that more or less summarized the tsunami of news about that huge data breach initially reported by ...

Facebook Phishing Scams Target Concerned Friends and Family

BleepingComputer describes a phishing scam that’s been running rampant on Facebook for the past several months, in which threat actors use hacked accounts to post links to phony articles ...

Russian State-Sponsored Threat Actor Targets High Profile Individuals in Phishing Campaign

The Russian state-sponsored threat actor “COLDRIVER” is launching phishing campaigns against “high profile individuals in NGOs, former intelligence and military officers, and NATO ...

Russian Hackers Win Big: Microsoft's Senior Exec Team Emails Breached

In a Friday regulatory filing, Microsoft has reported that its corporate email accounts were compromised by a Russian state-sponsored hacking group known as Midnight Blizzard, also ...

Facebook Work-From-Home “Job” Posting Scam Goes the Extra Mile to Trick Victims

A new job posting scam found by IT security company Qualysys is focused on capturing victim’s identity details, accessing victim’s Facebook accounts, and committing fraud. In this new ...

More Than Half of Data Breaches in the U.K.’s Legal Sector are Due to Insider Error

A new analysis of data breaches in the United Kingdom's legal sector shows that organizations need to be looking inward more and look for ways to elevate the security awareness of ...

Scammers Target Owners of Missing Pets

Some particularly cold-hearted scammers are targeting users of lost pet forums with phony ransom demands, the BBC reports.

‘Swatting’ Becomes the Latest Extortion Tactic in Ransomware Attacks

Rather than stick to traditional ransomware extortion methods that revolve around the attack itself, a new form of extortion known as Swatting puts the focus on the victim organization’s ...