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Analyze » Vercel » THEVER1776690400

Incident Score: Analysis & Impact (THEVER1776690400)

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

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-62
Company Score Before Incident606 / 1000
Company Score After Incident544 / 1000
Company LinkView Vercel Profile
INCIDENT NUMBERTHEVER1776690400
Type of Cyber IncidentBreach
ATTACK VECTORCompromised third-party OAuth app (Google Workspace)
DATA EXPOSEDNon-sensitive environment variables, some customer-related...
INCIDENT DATE20/04/2026
STATUSOngoing

Key Highlights From The Incident Analysis

  • Timeline of Vercel'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 Vercel 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 Vercel breach identified under incident ID THEVER1776690400.

The analysis begins with a detailed overview of Vercel's information like the linkedin page: https://www.linkedin.com/company/vercel, the number of followers: 200744, the industry type: Software Development and the number of employees: 873 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 606 and after the incident was 544 with a difference of -62 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 Vercel and their customers.

On 20 April 2026, Vercel disclosed Data Breach issues under the banner "Vercel Breach Traced to Compromised Third-Party AI Tool".

On April 20, 2026, cloud platform provider Vercel disclosed a security breach stemming from the compromise of a third-party AI tool, Context.ai.

The disruption is felt across the environment, affecting Limited internal systems, and exposing Non-sensitive environment variables, some customer-related information.

Formal response steps have not been shared publicly yet.

The case underscores how Ongoing, teams are taking away lessons such as Highlights risks associated with third-party integrations, particularly in AI-driven tools, and underscores the need for heightened scrutiny of OAuth permissions in enterprise environments.

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 Use Alternate Authentication Material: Application Access Token (T1550.001) with high confidence (90%), supported by evidence indicating attack originated from a compromised OAuth app linked to Google Workspace and Trusted Relationship (T1199) with moderate to high confidence (80%), supported by evidence indicating breach stemming from the compromise of a third-party AI tool, Context.ai. Under the Credential Access tactic, the analysis identified Steal Application Access Token (T1528) with high confidence (90%), supported by evidence indicating hijack an employee’s Google Workspace account via compromised OAuth app. Under the Lateral Movement tactic, the analysis identified Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (80%), supported by evidence indicating hijacked Google Workspace account granted access to internal systems. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (70%), supported by evidence indicating non-sensitive environment variables, some customer-related information exposed. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate confidence (60%), supported by evidence indicating breach exposed some customer-related information (implied exfiltration). Under the Defense Evasion tactic, the analysis identified Use Alternate Authentication Material: Application Access Token (T1550.001) with moderate to high confidence (70%), supported by evidence indicating attackers used compromised OAuth app to bypass authentication controls. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Use Alternate Authentication Material: Application Access Token (90%)
Trusted Relationship (80%)
Credential Access
Steal Application Access Token (90%)
Lateral Movement
Valid Accounts: Cloud Accounts (80%)
Collection
Data from Local System (70%)
Exfiltration
Exfiltration Over C2 Channel (60%)
Defense Evasion
Use Alternate Authentication Material: Application Access Token (70%)

Sources & References