Cyberattack Cripples Peninsula Suburb's Systems

Municipal services and infrastructure disrupted by security breach

Mar. 21, 2026 at 4:06am by Ben Kaplan

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A cyberattack has knocked out the computer systems of a suburb on the San Francisco Peninsula, disrupting municipal services and infrastructure. The attack has left officials scrambling to restore critical functions and secure their networks against further intrusion.

Why it matters

Cyberattacks on local governments are becoming increasingly common, exposing vulnerabilities in aging IT infrastructure and the need for robust cybersecurity measures. This incident highlights the potential for widespread disruption to essential public services when municipal systems are compromised.

The details

The details of the cyberattack, including the method used by the attackers and the specific systems affected, have not been made public. However, officials have confirmed that the breach has impacted a range of municipal services, from online bill payments to emergency dispatch. The suburb's IT team is working around the clock to restore functionality and secure the network against further intrusion.

  • The cyberattack occurred on March 21, 2026.

The players

Adalberto 'Aldo' Toledo

A city hall reporter with The San Francisco Chronicle covering the mayor and Board of Supervisors. He is a Venezuelan American from a family of longtime journalists.

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What’s next

Officials have not provided a timeline for when full service will be restored, but they have vowed to work tirelessly to address the issue and prevent future attacks.

The takeaway

This incident underscores the need for local governments to prioritize cybersecurity and invest in modern, resilient IT infrastructure to protect critical public services from the growing threat of cyberattacks.