GK8 is a blockchain cybersecurity company that offers financial institutions an end-to-end platform for managing blockchain-based assets on their own. Its solution incorporates the world’s first true air-gapped Cold Vault that enables its clients to create, sign, and send secure blockchain transactions without internet connectivity as well as a highly-scalable MPC warm vault. Recently acquired by Celsius Network for $115 million, the company continues to operate as an independent entity. Chosen by Mastercard to help it define the future of blockchain finance and payments, GK8 serves clients managing billions worth of digital assets, including social investing network eToro, Securrency, a blockchain fintech company backed by State Street, U.S. Bank, WisdomTree, and Abu Dhabi Catalyst Partners, Tezos Foundation, and Prosegur, one of the world’s largest custodians with more than $400B assets under management. Recently, GK8’s founders Lior Lamesh and Shahar Shamai joined the 30 Under 30 list by Forbes.