Last year, WannaCry brought some companies to the edge of absolute ruin. While the most common entry vectors are known, companies are still making it much too easy for hackers.
Officially, emails were to blame for the largest-scale cyberattack in recent years. If users clicked on the mail attachment, WannaCry implanted malware into the computers, propagated itself, and encrypted accessible data in the blink of an eye. In an alternative scenario, hackers had infiltrated the manufacturer of a subsystem and built the malware code into a software patch.
While unfamiliar emails can simply be deleted, the deployment of such a patch can undermine the in-house security system with breathtaking speed.
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