Yep, these corporations have dedicated network team and firewalls but the staff go home and buy anti virus, do not understand what is zero day attacks and worse still end up with a slow PC with the anti virus.
On the other side of the coin, some due to work, especially large corporations to change OS is just too costly, so they are stuck with crappy windozed crappy OS & hardwares that run that OS. I had mentioned I noticed this guy on his IBM notebook working on the train, sitting next to me...I noticed WINDOZED 7...I ask him, WIN 7?...why?, MS had stopped supporting!...he told me, can't help it..company doesn't want to upgrade..
I have been using Lotus 1.2.3. from version 1.0, work processor, display mate, word pro or something, data base DBI-III & then fox pro...& some graphic program & one template SW which MS acquired later...then MS OFFICE, I have tried Open office & other Office packages; but MS Office is so universally used, I couldn't use any other, not even Apple suit of SW's.
I am still using MS Office, MAC Office 2011 now...not the 365, but the standalone!