US truck and military vehicle manufacturer Navistar just disclosed it was targeted by a cyberattack

• US truck and military vehicle manufacturer Navistar says it was targeted by a cyberattack.
• The company announced the cyberattack in a SEC filing published on Monday.
• The company said officials are investigating the "scope and impact of the cybersecurity incident."

US truck and military vehicle manufacturer Navistar International Corp said on Monday that the company was targeted by a cyberattack.

In an 8-K US Securities and Exchange Commission filing published on Monday, Navistar said it became aware of a potential data breach last month, saying it received a claim that data had been stolen from its IT system. It's unclear exactly what data was taken.

"The company, with the assistance of third-party experts, continues to investigate and address the scope and impact of the cybersecurity incident," the Illinois-based company said. Navistar manufactures military trucks, diesel engines, school and commercial buses, and more.

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Navistar added that its IT system "continues to be fully operational" and that law enforcement is aware of the incident.

The company's data breach is the latest in a string of cyberattacks. In recent weeks, the Colonial Pipeline, New York City's transit authority, and meat supplier JBS have all been targeted.