STA
Company Details
Linkedin ID:
sk-telecom-americas
Website:
Employees number:
26
Number of followers:
3,040
NAICS:
517
Industry Type:
Homepage:
skta.com
IP Addresses:
0
Company ID:
SK _2147470
Scan Status:
In-progress
SK Telecom Americas Company CyberSecurity Posture
skta.com
SK Telecom America (SKTA) is focused on the future and is hard at work developing what’s next. Our intention is to be the leader in providing innovative experiences in the convergence world. We are driving innovation and globalization by: * Developing new growth businesses * Providing differentiated customer experiences * Spreading innovation to global markets Located in Silicon Valley, California, SKTA is part of South Korea's largest telecommunications company and a global Information and Communications Technology (ICT) leader. Want to learn more about our businesses? Take a look at what we're creating: http://www.skta.com
SK Telecom Americas A.I CyberSecurity Scoring
STA Risk Score (AI oriented)Between 600 and 649
STA
Updated:
- Powered by our proprietary A.I cyber incident model
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STA Global Score (TPRM)XXXX
STA
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- Vulnerabilities
- Findings
STA Company CyberSecurity News & History
Past Incidents
1
Attack Types
1
SK Telecom
Breach
Rankiteo Explanation
Attack limited on finance or reputation
Description: In April 2025, SK Telecom experienced a cyberattack that involved malware planted by hackers on its network, leading to the suspected leakage of SIM card–related data for its 24 million customers. Although the company promptly detected and removed the malicious code on April 19, no confirmed instances of data exploitation, fraud or dark-web sales have been reported to date. Nonetheless, the incident sparked widespread customer anxiety, fueled by delayed communication and service interruptions. Subscribers faced longer wait times at customer service centers, and travelers relying on mobile connectivity encountered frustrations and uncertainty. Media coverage and social media discussions amplified concerns over potential misuse of sensitive information such as SIM identifiers and authentication tokens. In response, SK Telecom isolated compromised equipment, blocked unauthorized SIM changes and abnormal authentication attempts, and promoted a free SIM card protection service to prevent unauthorized copying or use of SIM cards. Chairman Chey Tae-won publicly apologized, accepted full responsibility for the slow response and unclear communication, and announced sweeping internal reforms, including the formation of an Information Protection Innovation Committee and increased investments in cybersecurity across SK Group. The breach highlighted the critical importance of transparent crisis management and robust data security measures in maintaining customer trust.
STA Company Scoring based on AI Models
Cyber Incidents Likelihood 3 - 6 - 9 months
A.I Risk Score Likelihood 3 - 6 - 9 months
Underwriter Stats for STA
Incidents vs Telecommunications Industry Average (This Year)
SK Telecom Americas has 31.58% more incidents than the average of same-industry companies with at least one recorded incident.
Incidents vs All-Companies Average (This Year)
SK Telecom Americas has 28.21% more incidents than the average of all companies with at least one recorded incident.
Incident Types STA vs Telecommunications Industry Avg (This Year)
SK Telecom Americas reported 1 incidents this year: 0 cyber attacks, 0 ransomware, 0 vulnerabilities, 1 data breaches, compared to industry peers with at least 1 incident.
Incident History — STA (X = Date, Y = Severity)
STA cyber incidents detection timeline including parent company and subsidiaries
STA Company Subsidiaries
SK Telecom America (SKTA) is focused on the future and is hard at work developing what’s next. Our intention is to be the leader in providing innovative experiences in the convergence world. We are driving innovation and globalization by: * Developing new growth businesses * Providing differentiated customer experiences * Spreading innovation to global markets Located in Silicon Valley, California, SKTA is part of South Korea's largest telecommunications company and a global Information and Communications Technology (ICT) leader. Want to learn more about our businesses? Take a look at what we're creating: http://www.skta.com
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Frequently Asked Questions
Explore insights on cybersecurity incidents, risk posture, and Rankiteo's assessments.
STA CyberSecurity History Information
Official Website of SK Telecom Americas
The official website of SK Telecom Americas is http://www.skta.com.
SK Telecom Americas’s AI-Generated Cybersecurity Score
According to Rankiteo, SK Telecom Americas’s AI-generated cybersecurity score is 628, reflecting their Poor security posture.
How many security badges does SK Telecom Americas’ have ?
According to Rankiteo, SK Telecom Americas currently holds 0 security badges, indicating that no recognized compliance certifications are currently verified for the organization.
Does SK Telecom Americas have SOC 2 Type 1 certification ?
According to Rankiteo, SK Telecom Americas is not certified under SOC 2 Type 1.
Does SK Telecom Americas have SOC 2 Type 2 certification ?
According to Rankiteo, SK Telecom Americas does not hold a SOC 2 Type 2 certification.
Does SK Telecom Americas comply with GDPR ?
According to Rankiteo, SK Telecom Americas is not listed as GDPR compliant.
Does SK Telecom Americas have PCI DSS certification ?
According to Rankiteo, SK Telecom Americas does not currently maintain PCI DSS compliance.
Does SK Telecom Americas comply with HIPAA ?
According to Rankiteo, SK Telecom Americas is not compliant with HIPAA regulations.
Does SK Telecom Americas have ISO 27001 certification ?
According to Rankiteo,SK Telecom Americas is not certified under ISO 27001, indicating the absence of a formally recognized information security management framework.
Industry Classification of SK Telecom Americas
SK Telecom Americas operates primarily in the Telecommunications industry.
Number of Employees at SK Telecom Americas
SK Telecom Americas employs approximately 26 people worldwide.
Subsidiaries Owned by SK Telecom Americas
SK Telecom Americas presently has no subsidiaries across any sectors.
SK Telecom Americas’s LinkedIn Followers
SK Telecom Americas’s official LinkedIn profile has approximately 3,040 followers.
NAICS Classification of SK Telecom Americas
SK Telecom Americas is classified under the NAICS code 517, which corresponds to Telecommunications.
SK Telecom Americas’s Presence on Crunchbase
No, SK Telecom Americas does not have a profile on Crunchbase.
SK Telecom Americas’s Presence on LinkedIn
Yes, SK Telecom Americas maintains an official LinkedIn profile, which is actively utilized for branding and talent engagement, which can be accessed here: https://www.linkedin.com/company/sk-telecom-americas.
Cybersecurity Incidents Involving SK Telecom Americas
As of December 17, 2025, Rankiteo reports that SK Telecom Americas has experienced 1 cybersecurity incidents.
Number of Peer and Competitor Companies
SK Telecom Americas has an estimated 9,749 peer or competitor companies worldwide.
What types of cybersecurity incidents have occurred at SK Telecom Americas ?
Incident Types: The types of cybersecurity incidents that have occurred include Breach.
How does SK Telecom Americas detect and respond to cybersecurity incidents ?
Detection and Response: The company detects and responds to cybersecurity incidents through an containment measures with isolating compromised equipment, containment measures with blocking unauthorized sim changes, containment measures with blocking abnormal authentication attempts, and remediation measures with promoting a free sim card protection service, and communication strategy with chairman chey tae-won's public apology and acceptance of responsibility..
Incident Details
Can you provide details on each incident ?
Title: SK Telecom Cyberattack
Description: SK Telecom experienced a cyberattack involving malware that potentially leaked SIM card–related data for its 24 million customers. The malware was detected and removed on April 19, 2025. No confirmed instances of data exploitation or fraud have been reported, but the incident caused widespread customer anxiety due to delayed communication and service interruptions. SK Telecom responded by isolating compromised equipment, blocking unauthorized SIM changes, and promoting a free SIM card protection service. The company announced internal reforms and increased investments in cybersecurity.
Date Detected: 2025-04-19
Type: Malware Attack
Attack Vector: Malware
Threat Actor: Hackers
What are the most common types of attacks the company has faced ?
Common Attack Types: The most common types of attacks the company has faced is Breach.
Impact of the Incidents
What was the impact of each incident ?
Incident : Malware Attack SK-843050725
Data Compromised: Sim card–related data, Sim identifiers, Authentication tokens
Operational Impact: Service interruptionsLonger wait times at customer service centers
Customer Complaints: ['Frustrations and uncertainty for travelers relying on mobile connectivity']
Brand Reputation Impact: Widespread customer anxietyAmplified concerns over potential misuse of sensitive information
What types of data are most commonly compromised in incidents ?
Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Sim Card–Related Data, Sim Identifiers, Authentication Tokens and .
Which entities were affected by each incident ?
Incident : Malware Attack SK-843050725
Entity Name: SK Telecom
Entity Type: Telecommunications Company
Industry: Telecommunications
Location: South Korea
Customers Affected: 24 million
Response to the Incidents
What measures were taken in response to each incident ?
Incident : Malware Attack SK-843050725
Containment Measures: Isolating compromised equipmentBlocking unauthorized SIM changesBlocking abnormal authentication attempts
Remediation Measures: Promoting a free SIM card protection service
Communication Strategy: Chairman Chey Tae-won's public apology and acceptance of responsibility
Data Breach Information
What type of data was compromised in each breach ?
Incident : Malware Attack SK-843050725
Type of Data Compromised: Sim card–related data, Sim identifiers, Authentication tokens
Number of Records Exposed: 24 million
Sensitivity of Data: High
What measures does the company take to prevent data exfiltration ?
Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: Promoting a free SIM card protection service, .
How does the company handle incidents involving personally identifiable information (PII) ?
Handling of PII Incidents: The company handles incidents involving personally identifiable information (PII) through by isolating compromised equipment, blocking unauthorized sim changes, blocking abnormal authentication attempts and .
Lessons Learned and Recommendations
What lessons were learned from each incident ?
Incident : Malware Attack SK-843050725
Lessons Learned: Transparent crisis management, Robust data security measures, Importance of clear and timely communication
What recommendations were made to prevent future incidents ?
Incident : Malware Attack SK-843050725
Recommendations: Increased investments in cybersecurity, Formation of an Information Protection Innovation CommitteeIncreased investments in cybersecurity, Formation of an Information Protection Innovation Committee
What are the key lessons learned from past incidents ?
Key Lessons Learned: The key lessons learned from past incidents are Transparent crisis management,Robust data security measures,Importance of clear and timely communication.
Investigation Status
How does the company communicate the status of incident investigations to stakeholders ?
Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through Chairman Chey Tae-Won'S Public Apology And Acceptance Of Responsibility.
Post-Incident Analysis
What were the root causes and corrective actions taken for each incident ?
Incident : Malware Attack SK-843050725
Corrective Actions: Isolating Compromised Equipment, Blocking Unauthorized Sim Changes, Promoting A Free Sim Card Protection Service,
What corrective actions has the company taken based on post-incident analysis ?
Corrective Actions Taken: The company has taken the following corrective actions based on post-incident analysis: Isolating Compromised Equipment, Blocking Unauthorized Sim Changes, Promoting A Free Sim Card Protection Service, .
Additional Questions
General Information
Who was the attacking group in the last incident ?
Last Attacking Group: The attacking group in the last incident was an Hackers.
Incident Details
What was the most recent incident detected ?
Most Recent Incident Detected: The most recent incident detected was on 2025-04-19.
Impact of the Incidents
What was the most significant data compromised in an incident ?
Most Significant Data Compromised: The most significant data compromised in an incident were SIM card–related data, SIM identifiers, authentication tokens and .
Response to the Incidents
What containment measures were taken in the most recent incident ?
Containment Measures in Most Recent Incident: The containment measures taken in the most recent incident was Isolating compromised equipmentBlocking unauthorized SIM changesBlocking abnormal authentication attempts.
Data Breach Information
What was the most sensitive data compromised in a breach ?
Most Sensitive Data Compromised: The most sensitive data compromised in a breach were SIM card–related data, SIM identifiers and authentication tokens.
What was the number of records exposed in the most significant breach ?
Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 24.0M.
Lessons Learned and Recommendations
What was the most significant lesson learned from past incidents ?
Most Significant Lesson Learned: The most significant lesson learned from past incidents was Importance of clear and timely communication.
What was the most significant recommendation implemented to improve cybersecurity ?
Most Significant Recommendation Implemented: The most significant recommendation implemented to improve cybersecurity was Formation of an Information Protection Innovation Committee and Increased investments in cybersecurity.
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Latest Global CVEs (Not Company-Specific)
Description
Nagios XI versions prior to 2026R1.1 are vulnerable to local privilege escalation due to an unsafe interaction between sudo permissions and application file permissions. A user‑accessible maintenance script may be executed as root via sudo and includes an application file that is writable by a lower‑privileged user. A local attacker with access to the application account can modify this file to introduce malicious code, which is then executed with elevated privileges when the script is run. Successful exploitation results in arbitrary code execution as the root user.
Risk Information
cvss4
Base: 8.6
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
Out of bounds read and write in V8 in Google Chrome prior to 143.0.7499.147 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Description
Use after free in WebGPU in Google Chrome prior to 143.0.7499.147 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
Description
SIPGO is a library for writing SIP services in the GO language. Starting in version 0.3.0 and prior to version 1.0.0-alpha-1, a nil pointer dereference vulnerability is in the SIPGO library's `NewResponseFromRequest` function that affects all normal SIP operations. The vulnerability allows remote attackers to crash any SIP application by sending a single malformed SIP request without a To header. The vulnerability occurs when SIP message parsing succeeds for a request missing the To header, but the response creation code assumes the To header exists without proper nil checks. This affects routine operations like call setup, authentication, and message handling - not just error cases. This vulnerability affects all SIP applications using the sipgo library, not just specific configurations or edge cases, as long as they make use of the `NewResponseFromRequest` function. Version 1.0.0-alpha-1 contains a patch for the issue.
Risk Information
cvss4
Base: 8.7
Severity: LOW
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Description
GLPI is a free asset and IT management software package. Starting in version 9.1.0 and prior to version 10.0.21, an unauthorized user with an API access can read all knowledge base entries. Users should upgrade to 10.0.21 to receive a patch.
Risk Information
cvss3
Base: 6.5
Severity: LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
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RapidWhat Do We Measure ?
Incident
Finding
Grade
Digital Assets
Every week, Rankiteo analyzes billions of signals to give organizations a sharper, faster view of emerging risks. With deeper, more actionable intelligence at their fingertips, security teams can outpace threat actors, respond instantly to Zero-Day attacks, and dramatically shrink their risk exposure window.
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Network Security
Identify exposed access points, detect misconfigured SSL certificates, and uncover vulnerabilities across the network infrastructure.
SBOM (Software Bill of Materials)
Gain visibility into the software components used within an organization to detect vulnerabilities, manage risk, and ensure supply chain security.
CMDB (Configuration Management Database)
Monitor and manage all IT assets and their configurations to ensure accurate, real-time visibility across the company's technology environment.
Threat Intelligence
Leverage real-time insights on active threats, malware campaigns, and emerging vulnerabilities to proactively defend against evolving cyberattacks.
Rankiteo is a unified scoring and risk platform that analyzes billions of signals weekly to help organizations gain faster, more actionable insights into emerging threats. Empowering teams to outpace adversaries and reduce exposure.
