Anne Arundel County Public Library

Anne Arundel County Public Library is a public library system serving the residents of Anne Arundel County, Maryland. It provides free access to physical and digital collections such as books, magazines, audiobooks, and online databases. The library offers educational programs, literacy initiatives, and cultural events for various age groups. Public computers and wireless internet access are available at its branches to support research, job searching, and personal use. As a county‑funded institution, it operates under the oversight of the local library board and is supported by municipal funding.

In September 2018, the library experienced a cybersecurity incident when a self‑propagating Emotet banking Trojan infected nearly 600 staff and public computers. The malware was delivered via spam emails containing malicious Word documents and caused increased spam activity and unexpected reboots across affected machines. Although no stored customer data from library databases was confirmed stolen, the incident potentially impacted approximately 5,000 patrons who used the compromised systems. Patrons were advised to monitor for possible misuse of any sensitive information they had entered on the affected computers. In response, the library implemented enhanced network‑wide behavioral threat detection systems to better identify malicious activity. It also conducted staff cybersecurity training to improve threat recognition and prevent future infections.