An organization's CISO discovers that a third-party SaaS vendor processing customer PII has been acquired by a foreign company. The acquiring company is headquartered in a jurisdiction with government data access laws that conflict with the organization's regulatory obligations under GDPR. The vendor contract has 18 months remaining.
What should the CISO do FIRST?
A. Invoke the contract's termination-for-convenience clause and begin immediate vendor transition planning
B. Conduct a risk assessment to evaluate the change in data sovereignty exposure and regulatory compliance impact
C. Require the vendor to migrate all customer data to data centers located within approved jurisdictions
D. Notify the Data Protection Authority and affected customers of the potential cross-border data transfer