May 26, 2022

California: Contra Costa County Library Services Impacted by Ransomware Attack

UPDATE February 29  “Internet, Wi-Fi Back on Again at 26 Contra Costa Branch Libraries: The System Was Hit With a Mysterious Outage Over the Past Week After a Ransomware Attack Two Months Ago” (via The Mercury News|||  Official Update (via CCPL)

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UPDATE January 29 Contra Costa Library System ‘Hopeful’ For Full Recovery this Week From Ransomware Attack (via East Bay Times)

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From the Contra Costa County Library:

All Contra Costa County Library branches and the Martinez administrative offices are currently experiencing a network outage due to a ransomware attack. The Library is working with the Contra Costa County Office of the Sheriff and the Contra Costa District Attorney’s Office to investigate the attack.

The affected servers have all been taken offline and some library services have already been restored. It may be several days before all library services are fully operational. Libraries will be open as regularly scheduled, you can check out and return materials and use public computers, though printing services are not available at this time. Some online services are impacted, but Discover & Go and Overdrive are operational.

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From East Bay Times/Bay Area News Group:

The library had recently completed a revamp of its Web site and catalog described as long overdue. In 2018, the system’s 419 staff members handled 3,198,459 visits and 5,921,276 checkouts at its 26 libraries.

It also handled 1,566,210 virtual visits and 425,897 virtual checkouts. The library said its Discover & Go and Overdrive platforms were working.

Read the Complete Article

See Also: Contra Costa Library on Facebook

About Gary Price

Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.