Ntrepid is an American software, hardware, and cyber security company, registered in Florida and based in Herndon, Virginia.

[1][2][3] In 2008, the Anonymizer company was acquired by the Abraxas Corporation, which was purchased by Cubic in 2010 for $124 million.

[6][7] In October 2018, Ntrepid transitioned Anonymizer.com consumer anonymity accounts to Invincibull to focus on managed attribution.

[8] In March 2011, Ntrepid won a $2.76 million contract from the U.S. military for "online persona management.

"[2] The contract was for the creation of technology which would allow for blogging activities on websites, exclusively outside of the United States, to "counter violent extremist and enemy propaganda.