Energy companies in the US were hacked 79 times last year according to a survey by ThreatTrack Security.
The survey found that 35% of respondents reported endpoints on their network had been infected by malware that evaded their defenses during the last 12 months.
Moreover, 58% of respondents cited the complexity of malware as the most difficult aspect of defending their organization.
Of all respondents, 61% of energy companies said email is the biggest threat vector to allowing malware onto their systems.
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