[Ernest_at_the_Beach]

Thanks for the observations....I don't like Windows for a computer for browsing on the Web because of it's affliction to Malware easily getting aboard.

[Smokin' Joe]

I'm not exactly sure how the loop works, but computers on location are often interconnected with a LAN, not just the rig computers, but any accessing the web through them. Ours have anti-virus software on the rig computers, and individual's computers on that web have their own suites, often a variety of software. There are other personally owned computers out there which are not connected full time.

This isn't a government job, so to speak, and while some might have time to surf sites which are more virus intensive than most, most people do not, and doing so is often frowned upon for the risks it can impose on the system. I can't say if some site blocking is used, because I have never tried to surf those sites (I own my computers, and won't subject them to that risk, besides, they are used to prepare final reports at my home, and the grandchildren who live with us occasionally have access--so no porn, ever.) When your living depends to some extent on the survival of your computers and your data, you don't take chances, and you have redundencies onsite.

No one wants to be 'the one' who screwed up the computers, either. A stunt like that would follow you for the rest of your career.