Tabula Rosa Systems Definition Of The Day - Going Dark

Going dark – from whatis.com

Part of the Customer data management glossary:

Going dark is slang for the sudden termination of communication. In the military, the term is also used to describe a scenario in which communication appears to have ceased, but in reality has just moved from a public communication channel, where it could be monitored, to a private communication channel that prevents eavesdropping.

According to the United States Federal Bureau of Investigation (FBI), terrorists use mobile apps and encryption to go dark and make it difficult for the Bureau to monitor conversations in legally-intercepted transmissions. FBI Director James Comey described the going dark problem at the Aspen Security Conference in July 2015: “ISIL's M.O. is to broadcast on Twitter, get people to follow them, then move them to Twitter Direct Messaging" to evaluate them as recruits. "Then they'll move them to an encrypted mobile-messaging app so they go dark to us."

Mobile apps that use end-to-end encryption (E2EE) are designed to protect data at rest and in transit and keep the end user's text messages, emails and video chats private and secure. However, the same technologies that protect user communications from intruders make it impossible for government agencies to make sense of the transmissions they legally gather, especially if the app uses strong encryption.

The National Security Agency (NSA) has proposed two potential encryption methods to solve the going dark problem: split-key encryption and encryption using "key escrow." In split key encryption, also known as secret sharing, the technology vendor or service provider retains half of a master key and law enforcement retains the other half so that decryption requires participation of both parties. For key escrow, decryption requires multiple keys, one of which is stored separately from the user, possibly in a government agency location.

Opponents of the proposed technologies maintain that both methods would be prohibitively complex to implement and the complexity would provide points of entry that would ultimately endanger user data security.

https://www.youtube.com/watch?v=HTgYHHKs0Zwscoop_post=bcaa0440-2548-11e5-c1bd-90b11c3d2b20&__scoop_topic=2455618



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