Iberia Express Breach Incident Score: Analysis & Impact (IBE26101526112625)

In this Rankiteo incident briefing, we review the Iberia Express breach identified under incident ID IBE26101526112625.

The analysis begins with a detailed overview of Iberia Express's information like the linkedin page: https://www.linkedin.com/company/iberia-express, the number of followers: 89595, the industry type: Airlines and Aviation and the number of employees: 637 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 522 and after the incident was 502 with a difference of -20 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 Iberia Express and their customers.

On 23 November 2025, Iberia disclosed Data Breach, Extortion and Cyberattack issues under the banner "Data Breach at Iberia Airlines by Everest Hacking Group".

A Russian-linked cybercriminal group, Everest, claimed responsibility for a data breach at Spanish flag carrier Iberia, alleging the theft of 596 GB of sensitive passenger data, including names, contact details, birthdates, travel/booking information, and masked credit card data.

The disruption is felt across the environment, affecting Customer management software (third-party) and Internal computer systems (claimed, including technical data repositories), and exposing Names, Contact details (email addresses) and Birthdates, with nearly 5+ million (from .eml files) records at risk.

In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Securing IT systems (details unspecified), and stakeholders are being briefed through Alerted Iberia Club members via email about potential data compromise.

The case underscores how Ongoing (Iberia has not responded to requests for comment), with advisories going out to stakeholders covering Iberia Club members notified via email.

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.

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 Supply Chain Compromise: Compromise Software Dependencies and Development Tools (T1195.002) with high confidence (95%), with evidence including third-party customer management software vulnerability, and linked to a third-party customer management software vulnerability. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with moderate to high confidence (85%), with evidence including 596 GB of sensitive data exfiltrated, including .eml files (5M records), and internal technical data for aircraft and engines (claimed). Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (95%), with evidence including stolen 596 GB of sensitive data, including 430 GB of .eml files, and technical data for aircraft and engines (claimed) and Data from Network Shared Drive (T1039) with moderate to high confidence (80%), with evidence including internal documents (claimed), and internal technical data repositories (compromised). Under the Exfiltration tactic, the analysis identified Exfiltration Over Alternative Protocol: Exfiltration Over Unencrypted/Obfuscated Non-C2 Protocol (T1048.003) with high confidence (90%), with evidence including 596 GB of data exfiltrated, and dark web extortion (implied unauthorized data transfer) and Exfiltration Over Command and Control Channel (T1041) with moderate to high confidence (75%), supported by evidence indicating everest group demanded ransom for not leaking data (implies C2 for extortion). Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with lower confidence (30%), supported by evidence indicating ransom demanded (though no explicit mention of encryption) and Data Theft for Extortion (T1659) with high confidence (100%), with evidence including financially motivated extortion, demanded a ransom in exchange for not leaking the stolen data, and 596 GB of sensitive data stolen. Under the Defense Evasion tactic, the analysis identified Indicator Removal: File Deletion (T1070.004) with moderate to high confidence (70%), supported by evidence indicating iberia secured its IT systems post-breach (implies attacker may have cleared logs/traces). Under the Reconnaissance tactic, the analysis identified Gather Victim Host Information: Software (T1592.002) with moderate to high confidence (85%), supported by evidence indicating exploited third-party customer management software vulnerability (implies prior recon). Under the Persistence tactic, the analysis identified Account Manipulation: Additional Cloud Credentials (T1098.003) with moderate confidence (60%), with evidence including internal systems compromised (claimed), and technical data repositories accessed (implies sustained access). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.