Final answer:
Engaging a third party for attestation is the most effective method for a global finance company to demonstrate the effectiveness and compliance of its cybersecurity protocols and practices.
Step-by-step explanation:
The most effective method for a global finance company to demonstrate the effectiveness and compliance of its cybersecurity protocols and practices would be to engage a third party for attestation. Engaging a third party for attestation involves hiring an independent cybersecurity firm to assess and evaluate the company's cybersecurity measures.
This provides an objective assessment of the company's security posture, which stakeholders can trust. By obtaining an attestation from a reputable third party, the company can showcase its commitment to cybersecurity and gain the confidence of its stakeholders.