No. Totally possible to serve the &quot;bad stuff&quot; only some of the time.<p>Browser exploit kits commonly will return different stuff depending on user agent, and will track what IPs they have interacted with so that if after someone clicks the link you try to look at it, you&#x27;ll get something harmless. Nasty business. The only way to be sure is to save it, inspect what you saved (make sure you use something that will show tricky escape sequences trying to hide things), then maybe run it.