"If you know the enemy and know yourself, you need not fear the result of a hundred battles..." - Sun Tzu, The Art of War
Now that you know the enemy, its time to know yourself. During World War 2, loose lips sunk ships and people were told to keep a tight lip around any type of information they may have had that could endanger their fellow troops. The same idea exists now in this cyber war against hackers and social engineers looking to phish accounts from victims.
Knowing yourself may seem like a simple idea but its much harder than one would expect. People, in general, have a tendency to trust others on the internet, not quite like the world outside of the internet. How likely are you to fill out a form asking for personal information sent to you from your bank over e-mail as opposed to someone knocking on your door and asking for the same information? How often do you click links from e-mails as opposed to walking down an unknown alley pointed out to you by a stranger? Are you more likely to think twice before typing in your social security number or credit card number in a form online, as opposed to writing it down on a piece of paper and sending it over mail?
The internet has an odd sense of ingrained security for some people. The idea that since information is being requested and placed into a computer makes some people feel as though it should be secure, that it needs to be secure, otherwise why would it be through a computer?
Part of phishing prevention and protection comes from being proactive and knowing the type of information that you give out without a second thought. The easiest way to know yourself is to compare the internet you and the you outside of the internet.