One of the world’s top cybersecurity experts said even well-defended companies are getting “sucker punched” by ransomware and called on governments to take concerted action against the cybercriminals behind it.
Mandia also recommended companies focus on two key elements of defense against the ransomware threat. The first is to “limit the blast radius,” or the impact of a hack, by carefully segmenting computer systems and using other tactics to minimize the number of machines and amount of data hackers can lock down in a breach. The second is to ensure critical systems are backed up, that those backups are kept secure and that recovery plans are regularly tested.
He also warned executives to be wary if hackers hand over code needed to unlock systems after a ransom’s been paid because they may have buried other malware within it. FireEye and other security companies typically recommend that decryption tools are rewritten before they’re used to guard against this threat.
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