hacking, bug bounty, appsec

Security Coding in Go. Input validation


Input validation is one of most important technique in secure coding. Deep dive into it for Go language.
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Mitigating SSRF vulnerabilities in Go. A practical guide. Part 1


Server-Side Request Forgery (SSRF) vulnerabilities have been around for a long time, and they still pose a significant threat to web applications, so much so this kind of vulnerability has been included in OWASP TOP 10. This time I will explain how to mitigate SSRF vulnerability in Go applications.
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Threat Modeling 101


What is Threat Modeling? First of all, it’s just thinking about threats. We all do it, every day 😃 How someone could break into my house? But wait a second. How do you know that you need to protect your house in the first place? Maybe you don’t have a house, or maybe you don’t have money right now to buy deterrents. Or maybe your family thinks you are a bit paranoid? 😕
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External Authentication bypass in ingress-nginx


In October 2021 I was researched ingress-nginx for possibility to bypass external authentication using path traversal. It was origin story for other investigations regarding insecure usage of $request_uri which leaded to Apache APISIX CVE-2021-43557.
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