The short answer is->  

MPE/iX was NOT a mass marketed operating system and thus NO ONE was interested in hacking it.

The Audit answer is ->

Modem access and making changes to the catalog.pub.sys file making the "expected hello" line was one of the things we did to make sure that anyone hunting down systems by modem would not know how the system was addressed for access. 
You could also add passwords to getting access to the service line to the HP. 
and another thing...  VeSoft Security3000 product allows you to encrypt passwords and you are using that as a standard tool correct ;-).





-------------- Original message from Reid Baxter <[log in to unmask]>: -------------- 


> I have an auditor asking about what tools we have in our arsenal for 
> detecting viruses on the HP3000. I explained that the MPE/iX OS "does not 
> lend itself to viruses", but they would like me to expand on that reply. 
> I've been searching but have not been successful in locating a 'technical' 
> reason for this capability. Can anyone point me in the right direction A 
> link or otherwise ? Thank you in advance. 
> 
> Regards, 
> 
> Reid E. Baxter 
> 
> 
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