DC's public library computerized book index crippled, not by malware..

[From dclibrary.org's main web page]

Service Alert

Due to a contract conflict between two software vendors, our DC Public
Library app is currently experiencing functionality limitations,
particularly with the "Search the catalog" and "Popular Titles" features
located at the top. The vendors are working to resolve this issue as soon as
possible. The library's catalog can still be accessed via our website both
on mobile and on desktop, for your convenience

https://www.dclibrary.org/

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