LinkedIn Vendor Cyber Rating & Cyber Score

Incident Types: The types of cybersecurity incidents that have occurred include Breach, Vulnerability and Cyber Attack.

Detection and Response: The company detects and responds to cybersecurity incidents through an remediation measures with offered protection tools such as email challenges and dual factor authentication, and remediation measures with passwords reset for 55,000 users, and communication strategy with informing customers about the breach, and remediation measures with patching, and law enforcement notified with yes (california office of the attorney general), and containment measures with passwords for accounts created before the 2012 breach were invalidated, and containment measures with aws trust & safety abuse reporting process, disabling prohibited content, and remediation measures with layered defenses, enhanced monitoring for unusual traffic patterns/file types, additional verification procedures for resume submissions, and enhanced monitoring with recommended (vigilance for unusual traffic patterns or file types), and containment measures with implemented measures to detect and mitigate scraping attempts, and communication strategy with acknowledged the activity and emphasized no private or sensitive data was accessed..

Common Attack Types: The most common types of attacks the company has faced is Breach.

Identification of Attack Vectors: The company identifies the attack vectors used in incidents through LinkedIn and Indeed (professional networking platforms).

Commonly Compromised Data Types: The types of data most commonly compromised in incidents are Email addresses and passwords, Learning Data, Contact Information, , Email Addresses, Hashed Passwords, Linkedin Member Ids, , Credentials, personally identifiable information (PII), sensitive employee data and Publicly available profile information.

Prevention of Data Exfiltration: The company takes the following measures to prevent data exfiltration: Offered protection tools such as email challenges and dual factor authentication, Passwords reset for 55,000 users, , Patching, , Layered defenses, enhanced monitoring for unusual traffic patterns/file types, additional verification procedures for resume submissions.

Handling of PII Incidents: The company handles incidents involving personally identifiable information (PII) through by passwords for accounts created before the 2012 breach were invalidated, aws trust & safety abuse reporting process, disabling prohibited content and implemented measures to detect and mitigate scraping attempts.

Key Lessons Learned: The key lessons learned from past incidents are Traditional perimeter security is insufficient against social engineering tactics. Organizations must adopt holistic security strategies that account for human factors alongside technological defenses. HR personnel are increasingly targeted due to their regular interaction with external contacts.Challenges platforms face in balancing open access with user privacy.

Implemented Recommendations: The company has implemented the following recommendations to improve cybersecurity: Use layered defenses (e.g., behavioral WAF, network segmentation) to detect and block malicious activity., Implement comprehensive training programs for HR personnel on phishing and social engineering risks., Maintain vigilance for cloud-hosted phishing sites using trusted IP ranges., Report abuse of cloud services (e.g., AWS) to platform providers for takedown., Adopt additional verification procedures for resume submissions and external communications., Enhance monitoring for unusual traffic patterns or file types (e.g. and ZIP files from unexpected sources)..

Additional Resources: Stakeholders can find additional resources on cybersecurity best practices at and Source: VMware Security Bulletin, and Source: California Office of the Attorney General, and Source: DomainTools Research, and Source: AWS Spokesperson Statement.

Communication of Investigation Status: The company communicates the status of incident investigations to stakeholders through Informing Customers About The Breach and Acknowledged the activity and emphasized no private or sensitive data was accessed.

Advisories Provided: The company provides the following advisories to stakeholders and customers following an incident: were Informing Customers About The Breach and .

Post-Incident Analysis Process: The company's process for conducting post-incident analysis is described as Recommended (vigilance for unusual traffic patterns or file types).

Corrective Actions Taken: The company has taken the following corrective actions based on post-incident analysis: Patching, , Implement Stricter Verification For External Communications (E.G., Resume Submissions)., Enhance Monitoring For Cloud-Hosted Phishing Sites Using Trusted Ip Ranges., Train Hr Personnel On Social Engineering Risks And Phishing Tactics., Adopt Layered Security Defenses (E.G., Behavioral Waf, Network Segmentation)., Collaborate With Cloud Providers To Report And Disable Abusive Content., , Measures to detect and mitigate scraping attempts.

Last Attacking Group: The attacking group in the last incident were an Unknown Hackers, Unauthorized Third Party, FIN6 (Skeleton Spider) and Third-party actors.

Most Recent Incident Detected: The most recent incident detected was on 2016.

Most Recent Incident Publicly Disclosed: The most recent incident publicly disclosed was on 2024-01-01.

Most Significant Data Compromised: The most significant data compromised in an incident were Email addresses and passwords, Learning Data, Contact Information, , email addresses, hashed passwords, LinkedIn member IDs, , Credentials, sensitive employee data, system access, Names, job titles, workplace details and contact data.

Most Significant System Affected: The most significant system affected in an incident was VMware NSX Manager UIGateway FirewallRouter Port Configurations and .

Containment Measures in Most Recent Incident: The containment measures taken in the most recent incident were Passwords for accounts created before the 2012 breach were invalidated, AWS Trust & Safety abuse reporting process, disabling prohibited content and Implemented measures to detect and mitigate scraping attempts.

Most Sensitive Data Compromised: The most sensitive data compromised in a breach were email addresses, Email addresses and passwords, Names, job titles, workplace details, contact data, LinkedIn member IDs, Contact Information, hashed passwords, Credentials, sensitive employee data, system access and Learning Data.

Number of Records Exposed in Most Significant Breach: The number of records exposed in the most significant breach was 243.5M.

Most Significant Lesson Learned: The most significant lesson learned from past incidents was Traditional perimeter security is insufficient against social engineering tactics. Organizations must adopt holistic security strategies that account for human factors alongside technological defenses. HR personnel are increasingly targeted due to their regular interaction with external contacts., Challenges platforms face in balancing open access with user privacy.

Most Significant Recommendation Implemented: The most significant recommendation implemented to improve cybersecurity was Use layered defenses (e.g., behavioral WAF, network segmentation) to detect and block malicious activity., Implement comprehensive training programs for HR personnel on phishing and social engineering risks., Maintain vigilance for cloud-hosted phishing sites using trusted IP ranges., Adopt additional verification procedures for resume submissions and external communications., Immediately upgrade to the patched versions of VMware NSX, Report abuse of cloud services (e.g., AWS) to platform providers for takedown., Enhance monitoring for unusual traffic patterns or file types (e.g. and ZIP files from unexpected sources)..

Most Recent Source: The most recent source of information about an incident are California Office of the Attorney General, DomainTools Research, AWS Spokesperson Statement and VMware Security Bulletin.

Most Recent Customer Advisory: The most recent customer advisory issued was an Informing customers about the breach.

Most Recent Entry Point: The most recent entry point used by an initial access broker were an LinkedIn and Indeed (professional networking platforms).

Most Significant Root Cause: The most significant root cause identified in post-incident analysis was Inadequate input sanitizationPrivileged access requirements, Legacy data from 2012 breach resurfaced; inadequate long-term protection of hashed credentials, Exploitation of trust in professional networking platforms (LinkedIn/Indeed).Abuse of trusted cloud infrastructure (AWS EC2/S3) to host malicious content.Sophisticated traffic filtering to evade detection (IP reputation, geolocation, OS fingerprinting).Use of CAPTCHA to bypass automated security scanners.Lack of verification procedures for external communications in HR workflows., Automated scraping of publicly accessible data.

Most Significant Corrective Action: The most significant corrective action taken based on post-incident analysis was Patching, Implement stricter verification for external communications (e.g., resume submissions).Enhance monitoring for cloud-hosted phishing sites using trusted IP ranges.Train HR personnel on social engineering risks and phishing tactics.Adopt layered security defenses (e.g., behavioral WAF, network segmentation).Collaborate with cloud providers to report and disable abusive content., Measures to detect and mitigate scraping attempts.