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The Danish SektorCERT reported two waves of attacks on 22 large and small critical infrastructure providers via unpatched vulnerabilities in Zyxel firewalls deployed between IT networks and the Internet. The SektorCERT report describes the first wave as exploiting a Zyxel vulnerability published two weeks before the first attack, and the second as exploiting a Zyxel zero day. The CERT further reported that in response to the attacks, utilities went into “island mode,” disconnecting their firewalls from the Internet until they could be repaired. Interested in learning more about the 68 cyber attacks that impaired operations at over 500 sites in 2023? Download the 2024 Threat Report ➡️ https://bit.ly/3wZhx58
