Best Antivirus for those who download dodgy porn

Any recommendations?
Got the monthly phone call from my old man this morning that usually means Ill probably have to rebuild his PC for the 100th time.
Anyone else come across some rock solid software for dirty old men that keep downloading porn from a dodgy site despite you telling them not to?
Any help appreciated.
Got the monthly phone call from my old man this morning that usually means Ill probably have to rebuild his PC for the 100th time.
Anyone else come across some rock solid software for dirty old men that keep downloading porn from a dodgy site despite you telling them not to?
Any help appreciated.