Cyber Risks · Krebs on Security

Beware of Security by Press Release

Summary: DirectDefense, a Denver-based security firm, published a report claiming that Cb Response, a product sold by competitor Carbon Black, leaked customer data by submitting suspicious files to the cloud-based multiscanner VirusTotal, which allows paying customers to download files submitted by others. Carbon Black responded that the feature was not enabled by default and that customers are informed of the privacy risks, while security expert Adrian Sanabria noted that dozens of other vendors submit binaries to VirusTotal and that DirectDefense singled out a competitor without alerting Carbon Black before going public.

Key Takeaway: VirusTotal holds one of the largest repositories of files in the world, and Lesley Carhart noted that an actor who could identify files uploaded from a target organization, even as hashes, could learn what software, operating systems, and document types it uses.

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Topics
Data Breaches
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