TeamT5 Breach Incident Score: Analysis & Impact (TEA1767639755)

In this Rankiteo incident briefing, we review the TeamT5 breach identified under incident ID TEA1767639755.

The analysis begins with a detailed overview of TeamT5's information like the linkedin page: https://www.linkedin.com/company/teamt5, the number of followers: 2201, the industry type: Computer and Network Security and the number of employees: 84 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 733 with a difference of -18 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 TeamT5 and their customers.

Taiwan government and infrastructure recently reported "China Hits Taiwan With 2.6 Million Daily Cyber Attacks in 2025 as Conflict Looms", a noteworthy cybersecurity incident.

Taiwan's main intelligence agency revealed that Chinese hackers made an average of 2.6 million cyber attacks per day in 2025.

Impact assessments are still underway, so the full scope is not yet clear.

Formal response steps have not been shared publicly yet.

The case underscores how Ongoing.

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 Exploit Public-Facing Application (T1190) with moderate to high confidence (70%), supported by evidence indicating relentless targeting of Taiwan’s digital infrastructure, Supply Chain Compromise (T1195) with moderate confidence (50%), supported by evidence indicating state-linked hacker groups with potential supply chain access, and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating scale of attacks suggests possible compromised credentials. Under the Reconnaissance tactic, the analysis identified Active Scanning (T1595) with moderate to high confidence (80%), supported by evidence indicating 2.6 million daily cyberattacks imply large-scale scanning and Gather Victim Host Information (T1592) with moderate to high confidence (70%), supported by evidence indicating targeting Taiwan government and critical infrastructure. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with moderate confidence (60%), supported by evidence indicating high-volume attacks may include brute force attempts and Unsecured Credentials (T1552) with moderate confidence (50%), supported by evidence indicating state-linked groups likely exploit weak credentials. Under the Collection tactic, the analysis identified Archive Collected Data (T1560) with moderate to high confidence (70%), supported by evidence indicating espionage motivation implies data collection. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating state-linked groups likely exfiltrate intelligence data. Under the Impact tactic, the analysis identified Endpoint Denial of Service (T1499) with moderate confidence (60%), supported by evidence indicating 2.6M daily attacks may include DoS components and Data Manipulation (T1565) with moderate confidence (50%), supported by evidence indicating geopolitical conflict suggests potential sabotage. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.