Incident Score: Analysis & Impact (GAR1777306152)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Garmin's Cyber Attack and lateral movement inside company's environment.
- Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
- How Rankiteo’s incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts Garmin Rankiteo cyber scoring and cyber rating.
- Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the Garmin breach identified under incident ID GAR1777306152.
The analysis begins with a detailed overview of Garmin's information like the linkedin page: https://www.linkedin.com/company/garmin, the number of followers: 378194, the industry type: Computers and Electronics Manufacturing and the number of employees: 10828 employees
After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 795 and after the incident was 781 with a difference of -14 which is could be a good indicator of the severity and impact of the incident.
In the next step of the video, we will analyze in more details the incident and the impact it had on Garmin and their customers.
Garmin recently reported "Garmin Cyberattack Disrupts Online Services", a noteworthy cybersecurity incident.
Garmin, a leading manufacturer of GPS navigation and wearable fitness technology, confirmed that a cyberattack last week disrupted multiple internal systems, temporarily taking several online services offline.
The disruption is felt across the environment, affecting Multiple internal systems, several online services, and exposing No evidence of customer data compromise.
In response, while recovery efforts such as Systems reportedly recovering continue.
Overall, the incident is a reminder of why proactive monitoring and strong governance matter.
Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.
The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.
MITRE ATT&CK® Correlation Analysis
Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating disrupted multiple internal systems, temporarily taking several online services offline and Valid Accounts (T1078) with lower confidence (40%), supported by evidence indicating no details on the nature of the attack or whether ransomware was involved. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate confidence (60%), supported by evidence indicating cyberattack disrupted multiple internal systems, operational interruptions and Endpoint Denial of Service (T1499) with moderate to high confidence (70%), supported by evidence indicating temporarily taking several online services offline, service disruptions. Under the Defense Evasion tactic, the analysis identified Disabling Security Tools (T1089) with lower confidence (40%), supported by evidence indicating no evidence that customer data was compromised, systems reportedly recovering and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (50%), supported by evidence indicating disrupted multiple internal systems, operational interruptions. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with lower confidence (30%), supported by evidence indicating no evidence of customer data compromise, no details on data exfiltration. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Garmin Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/garmin/incident/GAR1777306152
- Garmin CyberSecurity Rating page: https://www.rankiteo.com/company/garmin
- Garmin Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/gar1777306152-garmin-cyber-attack-april-2026/
- Garmin CyberSecurity Score History: https://www.rankiteo.com/company/garmin/history
- Garmin CyberSecurity Incident Source: https://www.teiss.co.uk/news/garmin-cyberattack-disrupts-online-services-no-evidence-of-customer-data-breach-17408
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf