Unimicron, Presto attacks mark industrial ransomware surge

Attacks on major organizations such as Unimicron, the South African Weather Service (SAWS), National Presto Industries, and Lee Enterprises signaled a surge in ransomware across critical infrastructure sectors in the first quarter of 2025 — a trend that was exacerbated by a growth in the variety and sophistication of the tactics used.

That’s according to security vendor Dragos, which noted in a report, released today, on attacks on critical infrastructure that ransomware is particularly rampant in the industrial and manufacturing sectors.

“In Q1 2025, Dragos identified 708 ransomware incidents impacting industrial entities worldwide, representing an increase from approximately 600 incidents documented in Q4 2024,” Dragos said. “This rise underscores the escalating frequency and complexity of ransomware operations affecting sectors such as manufacturing, transportation, industrial control systems (ICS) equipment, and engineering.”

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