EX-99.1 2 d94012dex991.htm EX-99.1 EX-99.1 Exhibit 99.1 March 20, 2026 Stryker Corporation Att: David Nathans, Vice President, Chief Information Security Officer Subject: Stryker Corporation Partner and Customer Connections to the Stryker Environment Mr. Nathans, Per your request, Palo Alto Networks Unit 42 hereby issues this letter as a status update on Unit 42’s services assisting Stryker Corporation (Stryker) to provide, at your direction, Digital Forensics and Incident Response (DFIR) services in relation to a security compromise involving impacts to Stryker’s Entra ID environment, servers, and workstations (“Security Incident”). Scope of Work As part of the completed activities for this engagement, Unit 42 has worked with Stryker’s technical teams to perform the following: Threat Hunting & Forensic Analysis: Conducted deep-dive analysis of endpoint forensic images, network logs, and identity infrastructure (including Entra ID/Active Directory) to identify indicators of compromise (IOCs) and evidence of unauthorized access. Containment & Eradication: Identified and neutralized suspected malicious binaries and unauthorized persistence mechanisms. …
Open exhibit ↗Current Report · Items 7.01, 9.01 · 8-K
Stryker Corporation
SYKNYSEEQUITYCurrent
Regulation FD Disclosure
Item 7.01 Regulation FD Disclosure. As previously reported in two separate Current Reports on Form 8-K, filed with and furnished to (as the case may be) the U.S. Securities and Exchange Commission (the “SEC”) on March 11, 2026, and March 12, 2026, respectively, Stryker Corporation (the “Company”) disclosed that the Company had identified a cybersecurity incident.…
Company context
Stryker is a global leader in medical technologies and, together with our customers, we are driven to make healthcare better. We offer innovative products and services in MedSurg, Neurotechnology and Orthopaedics that help improve patient and healthcare outcomes. Alongside our customers around the world, we impact more than 150 million patients annually. More information is available at www.stryker.com.
Current securities
Disclosure sections
Item 7.01Item 7.01 - Regulation FD Disclosure
Filed exhibits (2)
EX-99.2 3 d94012dex992.htm EX-99.2 EX-99.2 Exhibit 99.2 Customer Update: Stryker Network Disruption 03/23/2026 Our internal teams continue to work around the clock with external partners to make meaningful progress on our restoration efforts. We are grateful for the partnership and collaboration with government agencies and industry partners. We believe the incident is contained, and we are prioritizing restoration of systems that directly support customers, ordering and shipping. Our internal teams, in partnership with third-party experts, reacted quickly to not only regain access but to remove the unauthorized party from our environment. Early in our investigation, we believed there was no indication of ransomware or malware. Further into the course of our investigation, alongside Palo Alto Networks Unit42 and other experts, we identified that the threat actor used a malicious file to run commands which allowed them to hide their activity while in our systems. To be clear, this file was not capable of spreading - either inside or outside of our environment. Most importantly, at no point has our investigation identified malicious activity directed towards our customers, …
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