Cybersecurity incident disclosed by KEY TRONIC CORP in a Form 8-K (May 2024)

MATERIAL CYBERSECURITY INCIDENTS On May 6, 2024, Key Tronic Corporation (the “Company”) detected unauthorized third party access to portions of its information technology (“IT”) systems. Upon detection of this outside threat, the Company activated its cyber incident procedure to investigate, contain, and remediate the incident, including beginning an investigation with external cybersecurity experts and notifying law enforcement. The incident has caused disruptions, and limitation of access, to portions of the Company’s business applications supporting aspects of the Company’s operations and corporate functions, including financial and operating reporting systems. As the investigation of the incident is ongoing, the full scope, nature and impact of the incident are not yet known, but based on the information reviewed to date, the Company believes the unauthorized activity has been contained and is working diligently to bring the impacted portions of its IT system back online. As of the date of this filing, the Company does not believe the incident is reasonably likely to have a material impact on the Company, including its financial condition or results of operations. Forward-Looking Statements. This Current Report contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. These statements address the Company’s expectations or beliefs regarding future events, actions or performance, including the investigation, containment and remediation of the cybersecurity incident, the restoration of the Company’s IT system and the impact on the Company, including its financial condition and results of operations. Factors that could affect future developments and performance include the completion of the Company’s investigation, the possibility that containment and remediation may not be successful and other risk and factors contained in the documents that the Company has filed with the Securities and Exchange Commission

MATERIAL CYBERSECURITY INCIDENTS As disclosed in the Original Report, on May 6, 2024, the Company detected unauthorized third party access to portions of its information technology (“IT”) systems (the “cybersecurity incident”). Upon detection of this outside threat, the Company activated its cyber incident response procedure to investigate, contain, and remediate the incident, including engaging external cybersecurity experts to help investigate the scope and impact of the cybersecurity incident and notifying law enforcement. The cybersecurity incident caused disruptions, and limitation of access, to portions of the Company’s business applications supporting aspects of the Company’s operations and corporate functions, including financial and operating reporting systems. As a precautionary measure, the Company halted domestic and Mexico operations for approximately two weeks during remediation efforts, but other international operations continued without disruption. As of the date of this filing, the Company’s operations and corporate functions have been restored, and we believe that the unauthorized third party no longer has access to the Company’s IT systems. Since the date of the Original Report, the Company has determined that the threat actor accessed and exfiltrated limited data from the Company’s environment, which includes some personally identifiable information. The Company is in the process of providing appropriate notifications to potentially affected parties and to regulatory agencies as required by applicable law. The Company has also incurred, and may continue to incur, expenses related to the cybersecurity incident, including approximately $600,000 to date related to external cybersecurity experts. The Company believes that the impact to profit margins due to lost production for approximately two weeks in its domestic and Mexico operations and the incremental expense measures to recover from and remediate the cybersecurity incident will have a…

MATERIAL CYBERSECURITY INCIDENTS As previously disclosed in the Original Report, on May 6, 2024, the Company detected unauthorized third party access to portions of its information technology (“IT”) systems (the “cybersecurity incident”). Upon detection of this outside threat, the Company activated its cyber incident response procedure to investigate, contain, and remediate the incident, including engaging external cybersecurity experts to help investigate the scope and impact of the cybersecurity incident and notifying law enforcement. The cybersecurity incident caused disruptions, and limitation of access, to portions of the Company’s business applications supporting aspects of the Company’s operations and corporate functions, including financial and operating reporting systems. As a precautionary measure, the Company halted domestic and Mexico operations for approximately two weeks during remediation efforts. After production was restarted, these locations returned to near capacity approximately another two weeks later. Other international operations continued production without material disruption from the cybersecurity incident. During the disruption of business, the Company continued to pay wages in accordance with statutory requirements. The Company also deployed new IT-related infrastructure and engaged cyber security experts to remediate the incident. The Company’s operations and corporate functions were restored in mid-June, and we believe that the unauthorized third party no longer has access to the Company’s IT systems. Also as previously disclosed, the Company determined that the threat actor accessed and exfiltrated limited data from the Company’s environment, which includes some personally identifiable information. The Company is continuing the process of providing appropriate notifications to potentially affected parties and to regulatory agencies as required by applicable law. As part of the closing process for the fourth quarter of fiscal year…