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Analyze » C2K » C2K1775234418

Incident Score: Analysis & Impact (C2K1775234418)

The details regarding individual company incidents & reports gives you full view from every side.

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-19
Company Score Before Incident756 / 1000
Company Score After Incident737 / 1000
Company LinkView C2K Profile
INCIDENT NUMBERC2K1775234418
Type of Cyber IncidentCyber Attack
ATTACK VECTORNA
DATA EXPOSEDNA
INCIDENT DATE02/04/2026
STATUSOngoing

Key Highlights From The Incident Analysis

  • Timeline of C2K'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 C2K 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 C2K breach identified under incident ID C2K1775234418.

The analysis begins with a detailed overview of C2K's information like the linkedin page: https://www.linkedin.com/company/c2k, the number of followers: 231, the industry type: Information Technology & Services and the number of employees: 47 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 756 and after the incident was 737 with a difference of -19 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 C2K and their customers.

On 05 April 2024, Education Authority (EA) disclosed Cyber Attack issues under the banner "Cyber Attack Disrupts Northern Ireland’s School IT System".

A cyber attack has targeted the C2K school system, an IT network used by pupils and staff across Northern Ireland, prompting immediate containment efforts and a full investigation.

The disruption is felt across the environment, affecting C2K school IT system.

In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Network-wide password reset, temporary access restrictions, and began remediation that includes Further security tests underway, and stakeholders are being briefed through Updates via EA’s website and social media.

The case underscores how Ongoing, with advisories going out to stakeholders covering Updates on system restoration and password reset procedures via EA’s website and social media.

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 cyber attack has targeted the C2K school system, an IT network and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating network-wide password reset enforced as precautionary measure. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with lower confidence (40%), supported by evidence indicating network-wide password reset enforced as precautionary measure and OS Credential Dumping (T1003) with lower confidence (30%), supported by evidence indicating incident prompted immediate containment efforts. Under the Defense Evasion tactic, the analysis identified Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating temporarily restricted access to the system and Impair Defenses: Disable or Modify Tools (T1562.001) with lower confidence (40%), supported by evidence indicating further security tests are underway. Under the Impact tactic, the analysis identified Endpoint Denial of Service (T1499) with moderate to high confidence (70%), supported by evidence indicating disrupted access to IT network for pupils and staff and Service Stop (T1489) with moderate confidence (50%), supported by evidence indicating temporarily restricted access to the system. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with lower confidence (30%), supported by evidence indicating scope of data compromise is still under investigation. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Exploit Public-Facing Application (50%)
Valid Accounts (60%)
Credential Access
Brute Force (40%)
OS Credential Dumping (30%)
Defense Evasion
Valid Accounts (60%)
Impair Defenses: Disable or Modify Tools (40%)
Impact
Endpoint Denial of Service (70%)
Service Stop (50%)
Exfiltration
Exfiltration Over C2 Channel (30%)

Sources & References