I think you're supposed to exploit the vulnerability in relatively innocuous but deeply disturbing ways, get banned, then complain about how you only meant well, then be lauded on Hacker News as a martyr who should have been embraced by the hacked company.
Or rather you contact them. Then they ban you and possibly send the FBI after you for "illegally accessing a remote computer system" or other such crime and then you are punished for all your work. If you tell them you will disclose your research on a certain date they'll go after you for extortion.
I wrote this before and I'll say it again. I don't believe in "White Hacker" as a label. Corporations do not do well when their vulnerabilities are exposed. They don't have a way to handle "White Hackers" unless they are the ones hiring them. Most will strike back and punch you in the face no matter how good your intentions are. So if you already spent the time researching and finding the vulnerability, just disclose on a security forum or if you want to profit, sell on a black market.
I don't believe it is extortion since all he is asking them to do is fix their own vulnerability. I believe extortion requires the demand of money or services in exchange for action/inaction.
Doubtful, or a lot of consumer demands are technically extortion. In particular, the model jury rules for extortion tend to refer specifically to property (usually money).
I believe you mean "White Hat Hacker"... I think everyone gets the gist of what you mean but just wanted to clarify in case someone's thinking you're a racist hating on "Whitie" or something :)
I've heard the phrase "white hat" used frequently to describe hackers. I've never heard the phrase "white hacker".
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I prefer the homakovs of the world rather than the Anons (they would take full advantage) of the world. To have one vulnerability that could lead to another is undesirable. Homakov's actions could be considered aggressive, but sometimes that's exactly what is needed in order to push something. (no pun intended)