Engadget reports this afternoon that a developer revealed a Mac security hole without telling Apple. Typically, coders and researchers who discover security vulnerabilities in software will tell the companies involved before posting their findings -- it's a courtesy to make sure that those holes are patched before attackers can use them. Don't tell that to developer Luca Todesco, though. He recently posted details of an OS X exploit, "tpwn," that lets intruders get root-level access to your Mac (even if it's running the recent 10.10.5 update) without even telling Apple, let alone waiting for a patch. It's now a race between the Cupertino crew and malware writers to make use of the discovery. For more on this, read the Engadget report.