once people believed it wasn't possible, dns poisioning
While I see tens of thousands of Spam per day, I didn't find any case of cache
poisoning within the last two years. Do you really believe Spammers
would be able to poision the DNS caches of a million receivers?
That's not an acceptable argument.
2005 they did it, the spammers
the bright article in february 2005 that claimed that some cybercriminals are selling traffic by poisioning dns caches and that was ridiculed too fast afterwards
never underestimate a business that makes hundreds of millions of dollars a year in profit