I would be interested to know if indeed Ad-Aware and Spybot
Search and Destroy were able to discriminate between legit and
non-legit use of this application.
Me too.
Backweb can be used as a stand-alone pull client. McAfee used to come
with a branded version of Backweb to pull definition updates; iirc it
was labeled 'SecureCast.' It was completely separate from the McAfee
installation, and it was a full Backweb client, i.e. it could be used
to pull from other 'channels' than just McAfee's. The whole thing was
pretty transparent and configurable, and it did not seem to be spyware
at all.
But Backweb technology can certainly be used as spyware, and the
Backweb people don't seem to care how their products are used as long
as they get paid. I would think it difficult for Ad-Aware or Spybot to
determine whether or not any given Backweb component is spyware or not.
In any case, those apps should provide a clear warning of possible
consequences if they offer automagic Backweb removal. Backweb's
partners include some heavy hitters (NAI, IBM, SAP, F-Secure).