Monero

Monero (XMR) is a private and untraceable cryptocurrency that keeps money confidential. Contrary to many cryptocurrency projects, it's actually grassroots, developed as a decentralized open source software, and dedicated to privacy & freedom.
See also SHUM.

- Did you hear the twitter hackers got caught by following their Bitcoin transactions?
- Haha, so dumb, they should have asked for Monero!