"Web designers need to know which phishing strategies work and why"
The questions is a dilemma for most user interface designers because both pishers and anti pishers battle in the same web space This sentence is a bit of confusing and hard to understand
"Fooling these participants means anyone with the knowledge can be fooled with spoofed websites" uhm not clear. you mean if they can fool this guy then they can fool anybody?
Younger participants did not performed better than older participants
I think grammar problem with performed
"Previous use of browser and number of hours of surfing internet previously did had any correlation among the scores of the participants"
uhm did had??
It seems like you have a lot of grammar problems and the way describing your thoughts. You need to recheck it.