Stephen Kowski
J Stephen Kowski is email security professional with over a decade of experience as an email administrator and security analyst. When he isn’t helping companies fight threat actors, he is helping run a high school robotics charity in his community as one of the original founders 17 years ago.
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Email SecurityOct 24, 2025
Trusted Vendors, Twisted Links: The Dark Side of URL Rewriting
Discover how attackers use advanced URL rewriting tricks to bypass traditional blocklists and how organizations can stay ahead of evolving threats.
Stephen Kowski
3 min read
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Email SecurityOct 16, 2025
Inbox Infiltration: The File Type You’re Overlooking
Discover how attackers use SVG files to hide malicious JavaScript in images, and learn how to defend against these evolving phishing threats.
Stephen Kowski
3 min read
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AI Security Email SecurityJan 13, 2025
Inside a 90-Minute Attack: Breaking Ground with All-New AI Defeating Black Basta Tactics
Learn how a lightning-fast phishing attack mimicking Black Basta tactics was quickly stopped by Varonis Interceptor.
Stephen Kowski
4 min read
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Data Security Email SecuritySep 30, 2024
The Hidden Risks of URL Rewriting and the Superior Alternative for Email Security
URL rewriting is a common practice in email security. As threats evolve, it's clear that this approach has limitations and potential vulnerabilities.
Stephen Kowski
3 min read
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