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Analyze » Substack » MCGSUBAMTADTHALPANCARBET1785169886

Incident Score: Analysis & Impact (MCGSUBAMTADTHALPANCARBET1785169886)

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

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-164
Company Score Before Incident662 / 1000
Company Score After Incident498 / 1000
INCIDENT NUMBERMCGSUBAMTADTHALPANCARBET1785169886
Type of Cyber IncidentBreach
ATTACK VECTOREmail (Phishing/Social Engineering)
DATA EXPOSEDEmail addresses, previously exposed personal...
INCIDENT DATE28/02/2026
STATUSOngoing (no evidence of actual compromise)

Key Highlights From The Incident Analysis

  • Timeline of Substack'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 Substack 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 Substack breach identified under incident ID MCGSUBAMTADTHALPANCARBET1785169886.

The analysis begins with a detailed overview of Substack's information like the linkedin page: https://www.linkedin.com/company/substack, the number of followers: 72365, the industry type: Online Audio and Video Media and the number of employees: 2843 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 662 and after the incident was 498 with a difference of -164 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 Substack and their customers.

Amtrak recently reported "Sextortion Scammers Exploit ShinyHunters Data Leaks in $2,000 Bitcoin Scheme", a noteworthy cybersecurity incident.

Cybercriminals are leveraging email addresses from past ShinyHunters data breaches to lend false credibility to a new wave of sextortion scams, demanding $2,000 in Bitcoin from victims.

The disruption is felt across the environment, and exposing Email addresses, previously exposed personal data (no new breach confirmed), plus an estimated financial loss of $2,000 Bitcoin demand per victim.

In response, moved swiftly to contain the threat with measures like Victims advised to ignore threats and report emails as spam, and began remediation that includes Change passwords if previously exposed, enable two-factor authentication (2FA), and stakeholders are being briefed through Public advisories (e.g., BleepingComputer) to raise awareness.

The case underscores how Ongoing (no evidence of actual compromise), teams are taking away lessons such as Leaked data from previous breaches continues to fuel cybercrime, even when the original breach has been addressed. Psychological manipulation is a key tactic in sextortion scams, and recommending next steps like Ignore sextortion threats and avoid engaging with scammers, Report scam emails as spam and Change passwords if previously exposed and enable two-factor authentication (2FA), with advisories going out to stakeholders covering Security experts confirm the emails are bluffs with no verifiable proof.

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 Phishing: Spearphishing Link (T1566.002) with high confidence (90%), supported by evidence indicating cybercriminals are leveraging email addresses from past ShinyHunters data breaches and Phishing: Spearphishing Attachment (T1566.001) with moderate to high confidence (70%), supported by evidence indicating scam emails falsely claim to be from ShinyHunters, alleging compromise. Under the Credential Access tactic, the analysis identified Gather Victim Identity Information: Email Addresses (T1589.002) with high confidence (90%), supported by evidence indicating email addresses from past ShinyHunters data breaches...targets individuals and Gather Victim Identity Information: Credentials (T1589.001) with moderate confidence (60%), supported by evidence indicating if the message includes a previously used password, users should change it. Under the Impact tactic, the analysis identified Defacement: Internal Defacement (T1491.001) with moderate confidence (50%), supported by evidence indicating threatens to leak the footage unless payment is made and Financial Theft (T1657) with high confidence (90%), supported by evidence indicating demanding $2,000 in Bitcoin from victims. Under the Reconnaissance tactic, the analysis identified Gather Victim Org Information: Determine Physical Locations (T1591.001) with lower confidence (40%), supported by evidence indicating targets individuals whose personal data was exposed in breaches and Phishing for Information: Spearphishing Service (T1598.003) with moderate to high confidence (70%), supported by evidence indicating scam emails...falsely asserts access to browsing history, contacts. Under the Resource Development tactic, the analysis identified Acquire Infrastructure: Web Services (T1583.006) with moderate confidence (60%), supported by evidence indicating bitcoin wallet address currently showing no transaction activity and Obtain Capabilities: Tool (T1588.002) with moderate confidence (50%), supported by evidence indicating scammers likely obtained the email lists from publicly leaked data. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with lower confidence (30%), supported by evidence indicating no evidence of new data exfiltration (implied reuse of old data). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Phishing: Spearphishing Link (90%)
Phishing: Spearphishing Attachment (70%)
Credential Access
Gather Victim Identity Information: Email Addresses (90%)
Gather Victim Identity Information: Credentials (60%)
Impact
Defacement: Internal Defacement (50%)
Financial Theft (90%)
Reconnaissance
Gather Victim Org Information: Determine Physical Locations (40%)
Phishing for Information: Spearphishing Service (70%)
Resource Development
Acquire Infrastructure: Web Services (60%)
Obtain Capabilities: Tool (50%)
Exfiltration
Exfiltration Over C2 Channel (30%)