Incident Score: Analysis & Impact (QUE1784917481)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Questo's Breach 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 Questo 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 Questo breach identified under incident ID QUE1784917481.
The analysis begins with a detailed overview of Questo's information like the linkedin page: https://www.linkedin.com/company/questoapp, the number of followers: 10872, the industry type: Mobile Gaming Apps and the number of employees: 46 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 751 and after the incident was 687 with a difference of -64 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 Questo and their customers.
On 01 December 2025, Questo, Inc. disclosed Data Breach issues under the banner "Questo, Inc. Data Breach Exposes Sensitive Personal Information".
On October 9, 2025, travel app company Questo, Inc.
The disruption is felt across the environment, and exposing Sensitive personal information including full names, dates of birth, government-issued ID numbers, passport details, Social Security numbers, financial account information, payment card data, and medical records.
In response, and stakeholders are being briefed through Breach notification sent to affected individuals.
The case underscores how Ongoing, with advisories going out to stakeholders covering Affected individuals notified of the breach.
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 Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating unauthorized third party had accessed or acquired sensitive files and Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating travel app company Questo, Inc. detected suspicious activity on its network. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate to high confidence (70%), supported by evidence indicating government-issued ID numbers, Social Security numbers, financial account information and OS Credential Dumping (T1003) with moderate confidence (50%), supported by evidence indicating sensitive files accessed or acquired by unauthorized third party. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating exposed data may include full names, dates of birth, passport details, medical records and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating sensitive files accessed or acquired between October 1 and October 9, 2025. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating unauthorized third party had accessed or acquired sensitive files and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating data breach involving sensitive personal information. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (40%), supported by evidence indicating sensitive files accessed or acquired by unauthorized third party and Stored Data Manipulation (T1565.001) with moderate confidence (50%), supported by evidence indicating heightened risks of identity theft and fraud for affected individuals. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Questo Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/questoapp/incident/QUE1784917481
- Questo CyberSecurity Rating page: https://www.rankiteo.com/company/questoapp
- Questo Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/que1784917481-questo-inc-breach-october-2025/
- Questo CyberSecurity Score History: https://www.rankiteo.com/company/questoapp/history
- Questo CyberSecurity Incident Source: https://www.mymalonetelegram.com/online_features/press_releases/questo-inc-data-breach-alert-edelson-lechtzin-llp-launches-investigation-into-exposure-of-personal-information/article_1c442bcf-1438-5a55-8a8b-02a1192b3732.html
- 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