What is it about porn that provokes such an outrage?
If I was a manager in that organisation, I'd be putting the porn-surfing under the larger categories of "non-work activity" and "non-work-related use of NSF resources" and disciplinging employees on that basis.
If employees did ridiculous amounts of porn-surfing, I'd be addressing matters of how they feel about their job, and whether they had a psychological issue that drove their porn addiction; at their next review I'd prescribe a course of counselling as an assessable item of job performance.
If someone is so heavily pulled to porn, something is badly off-track in his/her life. S/he might otherwise be an excellent worker, but needing to be brought into line and pushed in a direction of emotional/psychological healing.
What I'd like to ask is - why is it a scandal if employees wasted company resources accessing porn, but not if they waste similar resources accessing (say) medieval re-enactment sites and forums?