Yusuf Yildirimhttps://yusufyildirim.com/Recent content on Yusuf YildirimYusuf Yildirimhttps://yusufyildirim.com/og-default.pnghttps://yusufyildirim.com/og-default.pngHugoen-us2026 Yusuf YildirimSat, 24 Oct 2026 00:00:00 +0000Your Agent Is Mine: How Malicious LLM API Routers Hijack AI Agentshttps://yusufyildirim.com/posts/llm-api-routers/Sat, 24 Oct 2026 00:00:00 +0000https://yusufyildirim.com/posts/llm-api-routers/My notes on the paper &#34;Your Agent Is Mine&#34;: how LLM API routers can rewrite an agent&#39;s tool calls or steal its keys, and what the authors found when they tested 428 real routers.Abouthttps://yusufyildirim.com/about/Mon, 01 Jan 0001 00:00:00 +0000https://yusufyildirim.com/about/<p>Hi, I&rsquo;m Yusuf. I&rsquo;m a computer programming student at OSTİM Technical University in Ankara, learning security through hands-on projects and labs.</p> <p>These days I&rsquo;m focused on AI and LLM security: reading research on how AI agents get attacked and how they can be defended. I&rsquo;m still early in this, so most of what I write here is me working through papers and ideas to understand them better. If you spot a mistake or have a different take, I&rsquo;d really like to hear it.</p>