CISA Issues Cybersecurity Recommendations for Healthcare and Public Health Sector Organizations

The US Cybersecurity and Infrastructure Security Agency (CISA) recently conducted an assessment at the request of an unnamed healthcare and public health (HPH) sector organization that used on-premises software. The purpose of this assessment was to identify any potential cybersecurity vulnerabilities and provide recommendations for improvement. In this article, we will examine the findings of the assessment and discuss the cybersecurity issues encountered by HPH organizations.

Penetration and Web Application Testing

During the assessment, CISA’s team determined that there were no significant or exploitable conditions that would easily provide a malicious actor with initial access to the organization’s network. This is a positive outcome, indicating that the organization’s network defenses were robust in preventing external breaches. However, in the subsequent internal penetration testing phase, CISA did uncover misconfigurations, weak passwords, and other vulnerabilities that could have potentially allowed an attacker to compromise the organization’s domains.

CISA emphasized four high-severity and one medium-severity issue that require immediate attention within the organization. These findings underscore the importance of addressing these vulnerabilities promptly to safeguard sensitive data and protect against potential cyber threats.

Cybersecurity Concerns

In addition to the identified issues, CISA also draws attention to several high- and medium-severity concerns that could expose organizations to cyberattacks. These concerns include the reuse of passwords across administrator and user accounts, lack of timely software patches, use of outdated software, weak authentication measures, credentials stored in plaintext, and insecure file shares. Neglecting to address these concerns leaves organizations vulnerable to the full compromise of their environments.

Information Sharing and Assistance

Recognizing the significance of collaboration and information sharing, CISA has decided to release the results of the assessment. By sharing this information, the agency aims to assist other healthcare and public health sector organizations in enhancing their cybersecurity posture. This knowledge exchange promotes collective learning and strengthens the overall security of the HPH sector.

Specific Findings

The assessment revealed alarming vulnerabilities within the organization, including multiple web interfaces protected by default credentials and the use of default printer credentials. Taking advantage of four different attack paths, CISA demonstrated how easily an organization’s domain could be compromised if such weaknesses are left unaddressed.

Strategies for Mitigation

To mitigate cyber threats, CISA recommends several strategies that HPH organizations should implement. These strategies include regularly updating and patching software, implementing strong authentication measures like multi-factor authentication (MFA), avoiding password reuse, using secure file sharing methods, and ensuring credentials are not stored in plaintext. By adopting these proactive measures, organizations can significantly enhance their cybersecurity defenses.

Assessment Details

CISA’s assessment involved a comprehensive two-week penetration test, which evaluated various aspects of the target entity. The assessment encompassed testing web applications for vulnerabilities, assessing susceptibility to phishing attacks, simulating adversary attacks to test resilience, and reviewing databases and network infrastructure for potential misconfigurations and vulnerabilities.

Phishing and Authentication

During the assessment, some employees fell for phishing email lures and inadvertently shared their credentials through malicious forms. However, due to the organization’s implementation of multi-factor authentication (MFA), the accessed information had limited access to external-facing resources. This highlights the importance of not only employee training and awareness but also the value of multifactor authentication in preventing unauthorized access.

The recent cybersecurity assessment by CISA has shed light on the vulnerabilities faced by healthcare and public health sector organizations. This assessment serves as a wake-up call for organizations to take proactive steps in mitigating cyber threats. By promptly addressing the identified issues, implementing CISA’s recommended strategies, and prioritizing cybersecurity best practices, HPH organizations can effectively safeguard their networks, ensuring the protection of sensitive data and maintaining the trust of patients and stakeholders.

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