Dandelion
Dandelion++ is a privacy-enhancement for the DigiByte blockchain that aids in obfuscating the senders IP address.
It was implemented and relased in to DigiByte Core 7.17.2 on the 3rd of May 2019, making DigiByte the first major UTXO blockchain to implement it (After Grin, Beam & ZCoin).
Here's a brief video by Josiah that was shown at the DigiByte Global Summit 2019 that tries to explain Dandelion in 10 minutes, how it works: