It is currently impossible & may always be impossible, to prevent all Internet problems.  Since most Internet security & protection programs just look for Internet problem or symptom patterns, after they have caused problems for hours, days or longer.  But some of the newer & worst Internet problems change the way they look, work or what they do, every time they run.  So pattern recognition alone won't detect them.  And some Internet security & protection programs also use heuristics to look for Internet problem symptoms.  But they often report many false positive warnings.  Since some possible Internet problem symptoms are the same as many common program functions.  So no standard Internet security & protection program or combination of them, will ever detect, prevent or remove all Internet problems.

Also every computer contains electronic parts, that each contain up to millions of electronic circuits.  And all modern computer operating systems such as Windows, Mac OS, Linux, Unix, etc, and many of their large programs, contain millions of lines of computer programming instructions to make them work.  Also most computers are different.  Since even the same brand & model computers are customized with different hardware, software & updates, as soon as they're used.  So it's humanly impossible to make most computer hardware, software and peripherals perfect.  Since new bugs are constantly found & exploited every month, before they can be patched by their security updates.  And many computers aren't updated regularly with the security updates or patches, to prevent the fixed problems.  So even if every computer had the recommended Internet security & protection programs installed with all of their updates, some Internet problems just go through bugs in the computer's operating system instead.  This is why Internet security & protection is a myth.

About four years ago, we saw one of our client's brand new computers get a virus in less than two minutes, after it was connected to their high-speed Internet service, with limited Internet protection.  And I've read it takes less than twenty seconds now, for an Internet problem to get through on a computer, without the four recommended levels of Internet protection already installed.

We've been using, recommending & installing the five most popular free Internet protection & security programs, for us and up to 100 of our  clients, for the last three years.  They have worked well to help prevent most Internet problems until recently.  But now some major problems seem to be getting past one or more of them.  Since three of our client's new computers have had major Internet problems in the last month, even though they were all protected & updated, with the same five programs, as most of our other clients have been using, for the last three years.