As to what you&#x27;re quoting, yes, it does.  It seems likely that they found ways to penetrate NetScreen.  At the end of the original top secret document:<p>&gt; The vast majority of current Juniper exploits are against firewalls running the ScreenOS operating system.<p>This reads like a statement of fact.  That they knew of multiple exploits against ScreenOS.  Enough to use the term &quot;vast majority&quot;. That doesn&#x27;t mean the most recent backdoors are their work, but it does seem to imply that they found ways to penetrate NetScreen.