Former NSA chief raises $78 million for critical infrastructure cyber security start-up

Former US National Security Agency chief Keith Alexander has raised $78 million of investment for his tech start-up IronNet Cyber Security.

The series B investment was backed by British investment firm C5 Capital, along with existing investors ForgePoint Capital and Kleiner Perkins.

The Fulton, Maryland-based company, which develops a range of network-based cyber security solutions, said it will use the money to accelerate the development of its products.

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