Andrew Auernheimer, aka 'weev', former president of the trolling group GNAA, was not doing this out of some kind of altruism. He did not do this to point out the vulnerability. By his own admittance, "[he] did this because [he] despised people [he] think[s] are unjustly wealthy and wanted to embarass them."
If you think Auernheimer is anything like Aaron Swartz, think again.