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Just days before the annual Black Hat security conference in Las Vegas, a talk on Apple's FileVault encryption system was abruptly canceled by its presenter.
Researcher Charles Edge told the Washington Post that he had signed confidentiality agreements with Apple. The agreements prevent him from discussing further any vulnerabilities he may have found within Apple's FileVault encryption system. Edge, Director of Technology of 318, Inc, has spoken at previous Black Hat and DefCon conferences.
This is not the first time a vendor has asked a security research not to give at talk at Black Hat.
In 2005, then-ISS employed researcher Micheal Lynn, was asked by Cisco not to present a talk on flaws within that company's routers. On stage at Black Hat, Lynn first quit his job, then went ahead and gave his original talk. Afterward, he, too, signed a confidentiality agreement with Cisco.