Opening it in your browser is generally safe, but as with any web file, be cautious if it's from an untrusted source. The server executing the SSI code could pose a risk if the file was maliciously crafted, but this is a server-side concern.
Document head
The top frame was empty. The bottom frame was empty. The center frame contained a single line of Courier New text: Who is viewing?
operator tells Google to look for websites that have that specific file path in their URL.
To understand why this string exposes live hardware feeds, it helps to break down the technical components of the phrase:
