Capable of blocking 99% of all socially-engineered malware, Internet Explorer 9 is the best browser to protect users against attacks for which there’s no patch, since there are no actual code vulnerabilities targeted.
Attacks involving social engineering are designed to “exploit” users rather than actual security flaws, through a variety of techniques from offering victims the promise of cash incentives to scaring them into doing an action which will backfire and infect their computers with malicious code.
While there’s no patch for “problems” that actually sit between the chair and the computer monitor, IE9 is the next best thing, a security barrier against socially-engineered malware as close to impassible as possible.
Just 1% of social engineering attacks bypass IE9, with the browser blocking or warning customers for the rest of 99% of socially-engineered malware. Huge compared to Opera 10 for example, which lets all attacks pass.