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

Microsoft Remains the Most Impersonated Brand in Phishing Attacks, with Facebook Phishing Surging

For the fifth quarter in a row, Microsoft is the favorite domain of choice for scammers using phishing attacks to lure their victims into clicking on malicious content.

Advice For Women: "Breaking Into the InfoSec Business"

KnowBe4’s Senior Vice President of Cyber Operations Rosa Smothers was recently interviewed on the CyberWire’s Daily Podcast, where she discussed her background working for the CIA and ...

18 Months, 61 Billion Credential-Stuffing Attacks

Akamai observed 61 billion credential stuffing attacks between January 2018 and June 2019, according to Computer Business Review. In a new report on Internet security, Akamai researchers ...

Phishing Attacks Up, Especially Against SaaS And Webmail Services

Phishing attacks continued to rise into the summer of 2019 with cybercrime gangs’ focus on branded webmail and SaaS providers remaining very keen, according to the APWG report. The report ...

Oklahoma Pension Fund Robbed of $4.2 million via Compromised Email

Attackers stole millions of dollars from Oklahoma’s pension fund for retired law enforcement officers, the Oklahoman reports. The Oklahoma Law Enforcement Retirement System (OLERS) said ...

[Phishing Alert] UK Home Office primes Brexit spam cannon for a million texts reminding folk to check passports

The Register reported: "The UK Home Office will send a million text messages reminding people that the rules for travelling to the European Union will change in the event of a no-deal ...

Exclusive: Russia carried out a 'stunning' breach of FBI communications system, escalating the spy game on U.S. soil

Yahoo came out with some very interesting news: "On Dec. 29, 2016, the Obama administration announced that it was giving nearly three dozen Russian diplomats just 72 hours to leave the ...

Ex White House CIO attacks insurance firms for 'fuelling ransomware industry'

Former CIO of the White House Theresa Payton has warned that cyber insurance companies are supporting the ransomware industry by manipulating organisations into paying to have their ...

WSJ: "U.S. Targets North Korean Hacking as Rising National-Security Threat"

Ian Talley and Dustin Volz at the WSJ wrote: