A look at some of the more interesting investments, acquisitions, and strategic moves in the security sector over the past year.

Claroty
Revenues: N/A Valuation: N/A

Industrial control systems (ICS) security vendor Claroty received a major endorsement of its technology this year when a syndicate of investors pumped $60 million into the company in a Series B funding rounding in June. The funding round was significant because the investors included several control system vendors and operators of industrial networks, such as Rockwell Automation, and venture firms backed by companies, such as Schneider Electric and Siemens.

Industrial cybersecurity has emerged as a major concern this year amid news of heightened interest in critical infrastructure targets among nation-state-backed threat actors. Claroty is among a small but rapidly growing group of security vendors addressing the growing demands of this market. The vendor has so far raised $93 million and says it has major customers in a variety of critical infrastructure industries, including oil and gas, utilities, chemical, manufacturing, and water.