Mount Diablo Unified School District

Mount Diablo Unified School District notified parents that a coding error in the SchoolMessenger mobile application (provided by Intrado) randomly disclosed contact information (names, emails, phone numbers) of other parents and students to users. The incident was discovered on September 14, 2020. The district immediately shut down access to the application and is investigating with the vendor. No evidence of misuse was found.

Mt. Diablo Unified School District filed an amended data breach notification with the California Attorney General. The breach occurred on November 4, 2019. The provided source document contains only the filing metadata and an empty attachment placeholder; specific details regarding data types, affected counts, and incident nature are not available in the provided text.

San Leandro Unified School District (SLUSD) notified the California AG of a breach involving its Aeries Student Information System. An unauthorized individual exploited a software vulnerability to access student and parent data, including names, addresses, emails, and hashed passwords. The perpetrator was taken into police custody. SLUSD required password resets and applied a software patch to remediate the vulnerability.

Mt. Diablo Unified School District reported a data breach to the California Attorney General. The breach occurred on August 8, 2018. The attached notification letter content is missing from the source, so specific details regarding data types, affected counts, and cause are not available in this extraction.

Mt. Diablo Unified School District experienced a data breach on April 27, 2017, due to a software caching malfunction in the HomeLink Portal provided by Eagle Soft and Microsoft. For one hour, approximately 600 families could inadvertently view other students' personally identifiable information, including addresses, phone numbers, immunization records, medical history, grades, and transcripts. No financial information or SSNs were exposed. The district took the portal offline, notified law enforcement and the CA AG, and initiated software audits.

Mt. Diablo Unified School District reported the theft of a password-protected, unencrypted computer from a burglarized office on December 1, 2012. The device contained Excel and Word files with names, dates of birth, addresses, and Social Security numbers of employees and former employees working between 1998 and 2010. The District offered one year of credit monitoring and implemented measures to reduce SSN usage.