The provided markdown content appears to be primarily promotional material, navigation elements, and membership sign-up forms from TechRadar, rather than the article content itself describing how AI tools like OpenClaw and GitHub Copilot can be hijacked to create botnets. As a result, I cannot extract the necessary facts, key highlights, explanations of methods, or caveats to write the "Story Summary" and "Why It Matters" sections as requested, since every claim must be traceable to the article. The core subject matter of the article is absent. Please provide the full text of the article for me to complete the task.