Dropbox Beefs Up Security

Two-factor authentication is widely regarded as a best practice for security in the online world, but Dropbox has announced a new feature that’s designed to make it even more secure.

Whereas two-step verification most commonly involves the user’s phone for the second authentication method, Dropbox’s new U2F support adds a new means of authenticating the user via Universal 2nd Factor (U2F) security keys instead.

What that means is that users can now use a USB key as an additional means to prove who they are.

“This is a very good advancement and adds extra security over mobile notifications for two-factor authentication,” said Rich Mogull, Securosis CEO.

“Basically, you can’t trick a user into typing in credentials,” Mogull explained. “The attacker has to compromise the exact machine the user is on.”

For most users, phone-based, two-factor authentication is “totally fine,” he said. “But this is a better option in high-security environments and is a good example of where the FIDO standard is headed.”

Security keys provide stronger defense against credential-theft attacks like phishing, Dropbox said.

“Even if you’re using two-step verification with your phone, some sophisticated attackers can still use fake Dropbox websites to lure you into entering your password and verification code,” the company explained in a blog post. “They can then use this information to access your account.”

Security keys, on the other hand, use cryptographic communication and will only work when the user is signing in to the legitimate Dropbox website.

Dropbox users who want to use the new feature will need a security key that follows the FIDO Alliance’s Universal 2nd Factor (U2F) standard. That U2F key can then be set up with the user’s Dropbox account along with any other U2F-enabled services, such as Google.

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Adobe Eases Privacy Concerns

Tests on the latest version of Adobe System’s e-reader software reveals the company is now collecting less data following a privacy-related row last month, according to the Electronic Frontier Foundation.

Digital Editions version 4.0.1 appears to only collect data on e-books that have DRM (Digital Rights Management), wrote Cooper Quintin, a staff technologist with the EFF. DRM places restrictions on how content can be used with the intent of thwarting piracy.

Adobe was criticized in early October after it was discovered Digital Editions collected metadata about e-books on a device, even if the e-books did not have DRM. Those logs were also sent to Adobe in plain text.

Since that data was not encrypted, critics including the EFF contended it posed major privacy risks for users. For example, plain text content could be intercepted by an interloper from a user who is on the same public Wi-Fi network.

Adobe said on Oct. 23 it fixed the issues in 4.0.1, saying it would not collect data on e-books without DRM and encrypt data that is transmitted back to the company.

Quintin wrote the EFF’s latest test showed the “only time we saw data going back to an Adobe server was when an e-book with DRM was opened for the first time. This data is most likely being sent back for DRM verification purposes, and it is being sent over HTTPS.”

If an e-book has DRM, Adobe may record how long a person reads it or the percentage of the content that is read, which is used for “metered” pricing models.

Other technical metrics are also collected, such as the IP address of the device downloading a book, a unique ID assigned to the specific applications being used at the time and a unique ID for the device, according to Adobe.

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