Sensata Technologies has begun notifying current and former employees of a data breach following the conclusion of an internal investigation into a ransomware attack that took place in April 2025.
A global leader in industrial technology, Sensata specializes in mission-critical sensors, controls, and electrical protection systems, serving sectors such as automotive, aerospace, and defense. The company generates annual revenues exceeding $4 billion.
The breach was initially disclosed in an 8-K filing with the U.S. Securities and Exchange Commission (SEC) after a ransomware attack occurred on Sunday, April 6. At the time, Sensata confirmed that the incident included data exfiltration and disrupted its shipping, manufacturing, and other operations.
While early findings verified that data had been accessed without authorization, the specifics of the stolen information remai5ned unclear. A detailed investigation, supported by external cybersecurity experts, later revealed that the attackers infiltrated Sensata’s systems on March 28, 2025.
"The evidence showed that there was unauthorized activity in our network between March 28, 2025, and April 6, 2025," reads the notice sent to impacted persons.
"During that time, an unauthorized actor viewed and obtained files from our network. We conducted a careful review of the files and, on May 23, 2025, determined that one or more of them may have contained your information."
According to the company, the compromised data may include sensitive personal details such as:
- Full name
- Address
- Social Security Number (SSN)
- Driver’s license number
- State ID card number
- Passport number
- Financial account and payment card details
- Medical and health insurance information
- Date of birth
The breach has affected both current and former employees, as well as their dependents, with the nature of the exposed data varying from person to person.
To support those affected, Sensata is offering one year of complimentary credit monitoring and identity theft protection services.
BleepingComputer has contacted the company to clarify the scale of the breach and the number of individuals impacted, but no response was received as of publication time.
So far, no ransomware group has claimed responsibility for the attack on Sensata Technologies.