Mjolnir Security Helps a Leading Canadian Healthcare Organization Recover from a Ransomware Attack in 2022

Case Study + News Mjolnir Security todayMarch 17, 2023 11

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Mjolnir Security is a top cybersecurity firm that specializes in preventing, detecting, and mitigating cyber threats. In 2022, a leading Canadian healthcare organization (henceforth referred to as “the Organization”) fell victim to a ransomware attack that had the potential to cause significant disruption in patient care and compromise sensitive data. This case study outlines the steps Mjolnir Security took to help the Organization recover from the attack and prevent future breaches.


The Organization provides healthcare services to millions of Canadians and houses sensitive patient data, including medical records and personal information. In August 2022, the Organization discovered that its IT infrastructure had been compromised by a ransomware attack. This attack encrypted crucial files and systems, rendering them inaccessible to healthcare providers, administrators, and patients. The attackers demanded a sizable ransom to release the encrypted data.

The Situation

When the Organization discovered the attack, they immediately contacted Mjolnir Security to assess the situation and help them recover from the breach. Mjolnir Security’s team conducted a thorough investigation, identifying the following key issues:

  1. The ransomware had infiltrated the Organization’s system via a phishing email.
  2. The attackers had gained access to sensitive patient data, putting the privacy of millions of Canadians at risk.
  3. The encrypted data and systems severely disrupted the Organization’s ability to deliver healthcare services.

Mjolnir Security’s Response

Mjolnir Security executed a strategic plan to address the issues outlined above, which consisted of the following steps:

  1. Containment: Mjolnir Security isolated the affected systems and implemented a containment strategy to prevent the ransomware from spreading to other parts of the IT infrastructure. This process involved shutting down affected servers, disconnecting network access, and implementing temporary access controls.
  2. Assessment: The team conducted a thorough assessment of the ransomware, identifying its strain and analyzing its behavior. This enabled them to determine the best course of action for recovery and decryption.
  3. Recovery: Instead of paying the ransom, Mjolnir Security used their expertise to locate and exploit weaknesses in the ransomware’s encryption algorithms. By doing so, they were able to decrypt and recover the affected data, enabling the Organization to resume operations.
  4. System Hardening: To prevent future attacks, Mjolnir Security implemented multi-layered security measures, including two-factor authentication, stronger password policies, and endpoint protection. They also established a backup and recovery plan to ensure the Organization could quickly restore data in the event of another attack.
  5. Employee Training: Mjolnir Security provided extensive employee training to the Organization’s staff, educating them about phishing emails, social engineering, and other common attack vectors. This training helped to create a culture of security awareness and vigilance.


Mjolnir Security’s swift and effective response to the ransomware attack helped the Organization recover encrypted data, resume operations, and safeguard sensitive patient information. The comprehensive security measures and employee training provided by Mjolnir Security not only mitigated the immediate threat but also significantly reduced the Organization’s risk of future cyber attacks. This case study demonstrates the importance of partnering with an experienced cybersecurity firm like Mjolnir Security to protect against and recover from ransomware attacks.

Written by: Mjolnir Security

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