About Keystone Shipping Co.
Keystone Shipping Co. recently experienced a data breach involving unauthorized access to its computer network. The breach was identified on June 20, 2025, after it occurred on June 3, 2025. This incident affected a total of 352 individuals, including four residents of Maine. The breach involved the acquisition of personal information, specifically names and Social Security numbers, due to an external hacking event.
What Happened
Keystone Shipping Co. (“Keystone”) recently concluded an investigation into an incident involving unauthorized access to its computer network on June 3, 2025. Upon learning of the incident, Keystone immediately took measures to secure its network, commenced an investigation with assistance from external cybersecurity firms, and reported the incident to law enforcement. The evidence showed that there was unauthorized access to Keystone’s network and some files were obtained. Keystone reviewed the involved files and on June 20, 2025, confirmed that they contained the names and Social Security numbers of four Maine residents.
The breach involved unauthorized access to Keystone’s network, affecting 352 individuals, including four Maine residents. The incident occurred on June 3, 2025, and was discovered on June 20, 2025.
Next Steps
Affected users are advised to stay vigilant and monitor their account statements and credit reports for any unauthorized activity. They should also consider placing fraud alerts or security freezes on their credit files to prevent identity theft. Keystone has established a toll-free call center to assist individuals with questions and provide guidance on protective measures. Additionally, users should take advantage of the identity theft protection services offered by Keystone to safeguard their personal information.
Identity Theft Protection Services
Keystone Shipping Co. is offering one year of complimentary credit monitoring and identity theft protection services through IDX to those affected by the breach. The services include identity monitoring, credit monitoring, and identity theft restoration. Impacted individuals are encouraged to enroll in these services to protect their personal information. Enrollment instructions and a deadline are provided in the notification letter, and assistance is available through IDX’s customer service for any questions or issues that arise.