The consequences of a business email compromise attack

The consequences of a Business Email Compromise (BEC) attacks not only have immediate effects, such as data losses and potential breaches on healthcare organizations, but also have the possibility of long-term holes in email security that must be accounted for. 

What are Business Email Compromise attacks?

BEC attacks are a cyber threat where malicious individuals manipulate email communications to deceive employees, particularly those who have access to a company's financial resources or sensitive information. These attacks rely on social engineering tactics like phishing emails, forged sender addresses, and urgent solicitations.

During a BEC attack, the perpetrator often assumes the identity of a trusted figure, such as a senior staff member, vendor, or supplier, to deceive employees into taking actions that benefit the attacker. These actions may include transferring funds to the attacker's account, divulging sensitive data, or clicking on malicious links or attachments. BEC attacks can lead to significant financial losses, data breaches, and harm to an organization's reputation.

Go deeper: What are Business Email Compromise attacks?

Consequences of a BEC attack

Immediate impact 

1. Isolation and containment: The affected email accounts or systems must be quickly isolated and contained to prevent further unauthorized access or data exposure. This may involve disabling compromised accounts or systems.
2. Incident response team activation: Healthcare providers typically activate their incident response team, composed of IT professionals, legal experts, and cybersecurity specialists, to coordinate the response efforts.
3. Notification to leadership: Key members of the organization's leadership are informed about the incident to make informed decisions about resource allocation and communication strategies.
4. Forensic investigation: Forensic experts are engaged to investigate the attack, identify the scope of the breach, and assess the extent of data exposure or compromise.
5. Communication planning: A communication plan is developed to inform affected parties, including patients, regulatory authorities, and other relevant stakeholders, as per data breach notification requirements.
6. Communication with affected parties: Depending on the nature and severity of the breach, affected parties, including patients, may be notified about the incident in compliance with data breach notification laws.

Longer term consequences

1. Patient trust erosion: Breaches of patient data can erode patient trust in healthcare providers, impacting patient retention and the healthcare organization's reputation.
2. Resource diversion: Healthcare organizations may need to divert resources and staff time from patient care and clinical activities to address the aftermath of a BEC attack.
3. Third-party impact: If a BEC attack compromises the organization's relationships with third-party entities like insurers or billing companies, it can lead to disruptions in claims processing and reimbursement.
4. Further ransomware risk: BEC incidents can lead to the deployment of ransomware, which can lock critical healthcare systems and data, potentially requiring costly ransom payments.
5. Cybersecurity investment: Healthcare organizations may need to invest significantly in enhanced cybersecurity measures, including advanced threat detection, encryption, and employee training to prevent future BEC attacks.
6. Incident response enhancement: BEC attacks can prompt organizations to enhance their incident response capabilities to ensure swift and effective responses to future security incidents.

How a compromised email account contributes to BEC attacks

By gaining unauthorized access to a legitimate email account within a targeted organization, attackers can exploit the trust and familiarity associated with that account. They use this compromised account to send seemingly genuine emails to employees, customers, or partners, often with fraudulent requests for financial transactions, sensitive information, or other deceptive actions. 

Since the emails originate from a legitimate account, they are more likely to bypass traditional email security filters, making it challenging for recipients to discern the authenticity of the requests. This combination of trust, legitimacy, and access to internal information empowers BEC attackers to manipulate recipients into complying with their fraudulent schemes, leading to financial losses, data exposure, and damage to an organization's reputation.

Strategies to mitigate the consequences

Healthcare organizations can take a holistic approach to enhance their defenses against BEC attacks and minimize the associated risks. Alongside the use of HIPAA compliant email, the following measures provide additional protection. 

1. Email authentication protocols: Implement DMARC (Domain-based Message Authentication, Reporting, and Conformance), SPF (Sender Policy Framework), and DKIM (DomainKeys Identified Mail) to validate the authenticity of incoming emails and prevent spoofing.
2. Email filtering and threat detection: Deploy advanced email filtering solutions that can detect and block phishing attempts, malicious attachments, and fraudulent URLs.
3. Cyber insurance: Consider investing in cyber insurance policies to mitigate financial risks associated with BEC attacks, including legal expenses, regulatory fines, and recovery costs.
4. Employee reporting culture: Foster a culture of reporting by encouraging employees to promptly report suspicious emails or unusual email behavior. Establish an easy and confidential reporting mechanism.
5. Zero trust security: Adopt a zero-trust security model, treating every access request as potentially malicious, regardless of the source, and verifying trustworthiness before granting access.
6. Red teaming and penetration testing: Conduct regular red teaming exercises and penetration testing to identify vulnerabilities, evaluate defenses, and improve your organization's overall security posture.

See also: What is DKIM and why you need it