An anonymous reader writes "Dropbox can be very useful, but you might be a little surprised to learn that by copying one file from a computer running the application, an attacker can access and download all of your files without any obvious signs of compromise. Normal remediation steps after a compromise such as password rotation, system re-image, etc will not prevent continued access to the compromised Dropbox. Derek Newton, a security researcher that published this finding yesterday, discusses the security implications of this by-design security authentication method on his blog."
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