A security researcher based in Indonesia disclosed yet another Facebook bug this weekend – one that would allow an attacker to obtain the primary e-mail address associated with any Facebook account. Hours after informing the social network about the bug, however, it was closed and the researcher, Roy Castillo, was $4,500 richer. Castillo, a white hat vulnerability researcher based in The Philippines, disclosed the bug in Facebook’s Developer Application Roles Page in a post on his blog on Saturday.  When exploited, it allowed an attacker to discover the primary Facebook email address of any account – even those with the email privacy setting on “Only Me,” Castillo wrote.   Attackers would need a Facebook Developer account and some basic programming knowledge to take advantage of the vulnerability, in which Facebook mistakenly disclosed the e-mail address associated with a unique Facebook user ID. After discovering the buy on June 25th, Castillo […]