Caisse d’Epargne Breach Incident Score: Analysis & Impact (LA-CAICRE1766406599)

In this Rankiteo incident briefing, we review the Caisse d’Epargne breach identified under incident ID LA-CAICRE1766406599.

The analysis begins with a detailed overview of Caisse d’Epargne's information like the linkedin page: https://www.linkedin.com/company/caissedepargne, the number of followers: 93484, the industry type: Banking and the number of employees: 21039 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 777 and after the incident was 760 with a difference of -17 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 Caisse d’Epargne and their customers.

On 22 December 2025, La Poste disclosed DDoS issues under the banner "Cyberattaque DDoS contre La Poste et La Banque Postale".

Une cyberattaque de type DDoS a touché les services de La Poste (Colissimo, étiquetage, affranchissement, distribution des colis, Digiposte) et La Banque Postale, rendant de nombreux services inaccessibles.

The disruption is felt across the environment, affecting Services en ligne (Banque Postale, Colissimo, Digiposte, étiquetage, affranchissement, distribution des colis), datacenter.

In response, while recovery efforts such as Rétablissement partiel des services (Banque Postale fonctionnelle en partie le 22/12/2025) continue, and stakeholders are being briefed through Communiqués officiels minimisant l'impact (qualifié de 'dysfonctionnement' par certaines banques).

The case underscores how En cours, with advisories going out to stakeholders covering Appels à la patience, informations sur l'indisponibilité des services.

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 Impact tactic, the analysis identified Network Denial of Service (T1498) with high confidence (95%), with evidence including dDoS (Distributed Denial of Service) cyberattack, and inondation de requêtes et connexions and Endpoint Denial of Service (T1499) with moderate to high confidence (80%), with evidence including rendant key platforms...unavailable, and datacenter et réseau internet du groupe La Poste. Under the Initial Access tactic, the analysis identified Direct Network Flood (T1498.001) with high confidence (90%), with evidence including attack threatening the organizations existence, and interconnexion entre datacenter et réseau internet. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.