An "infection" in this case would be the execution of some other person's code on my computer. Browsers have been designed specifically to do this since Javasc

An "infection" in this case would be the execution of some other person's code on my computer. Browsers have been designed specifically to do this since Javascript was invented. The only difference between malware and "regular-ware" is whether the code meets certain user expectations about what it will and will not do.