CISO Guidance

1) Is this information credible?

• Yes, the information is credible. Phishing scams using fake voicemail notifications are a known tactic and have been reported by multiple security sources.

2) How could this be relevant to my org’s assets, vendors, or processes?

• This scam targets employees by mimicking internal communication systems, potentially compromising organizational credentials and sensitive data.
• Vendors and partners using similar communication platforms may also be targeted, leading to supply chain risks.

3) What’s the actual technical risk?

• High risk of credential theft leading to unauthorized access to business systems.
• Potential for malware infections if malicious links are clicked, resulting in data breaches or ransomware attacks.

4) What do we need to do to defend/detect/respond?

• Implement email filtering solutions to detect and block phishing emails.
• Conduct regular security awareness training focusing on phishing scams and social engineering tactics.
• Encourage employees to verify voicemail notifications through official channels rather than email links.
• Establish incident response procedures for suspected phishing attacks.

5) What’s the potential business/regulatory exposure?

• Loss of sensitive data could lead to regulatory fines under GDPR, CCPA, or other data protection laws.
• Reputational damage due to compromised customer or employee information.

6) Does it reveal a bigger trend?

• Yes, it highlights the ongoing evolution of phishing tactics, leveraging familiar communication methods to bypass traditional security awareness.

7) What actions or communications are needed now?

• Issue an internal alert to employees about the specific characteristics of this phishing scam.
• Review and update security policies related to email and communication systems.
• Coordinate with IT and security teams to monitor for unusual login activities and potential breaches.