Cryptographic ransomware attack on law firm
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Cryptographic ransomware attack on law firm
Client Background: A well-known law firm in Jinan.
Disaster Scenario: The firm was attacked by a new type of ransomware virus, which encrypted all case documents, client contracts, and evidence materials, including:
All materials for ongoing major litigation cases.
Client confidentiality agreements and sensitive legal documents.
A 30+ year historical case database.
All data from the law firm's management system.
Recovery Challenges:
The ransomware used dual encryption (RSA-4096 + AES-256).
Attackers stole some data as leverage for double extortion.
The backup system was also infected.
The legal industry has extremely high requirements for data integrity and confidentiality.
Recovery Process:
Security Isolation: Immediately isolated infected devices to prevent further spread.
Virus Analysis: Identified the virus variant and searched for potential decryption vulnerabilities.
Backup Repair: Repaired incompletely encrypted files in the backup system.
Fragment Recovery: Performed fragment reassembly for files that could not be directly decrypted.
Legal Compliance: The entire process was conducted under conditions that met the confidentiality requirements of the legal industry.
Security Hardening: Provided a comprehensive security hardening solution after recovery.
Successful Outcome:
96.8% of critical case data was successfully recovered.
100% secure recovery of confidential client files.
Assisted in completing the legal report for the cybersecurity incident.
Established a more robust data protection system for the law firm.
Recovery Time: 7 days
Data Recovered: Approximately 2.3TB
Client Testimonial: "As legal professionals, we deeply understand the importance of data. Datech is not only technically superb but also understands the unique needs of the legal industry, truly delivering on safety, confidentiality, and reliability."