[dazc]

'The original offense was "downloading porn on a work computer".......'

There wasn't an original offence, there has been an allegation which has been strongly denied.

[saulrh]

Fair enough. Allow me to rephrase, then, since the choice of refutation is enough to support my argument and I don't need to bring the validity of the accusation into it:

The refutation alone, that nobody would know who had downloaded porn even if it had happened, implies that this is a shared network account and it was being used to log in to desktop sessions.