A client insists that your recent network upgrade has compromised their data security, citing increased spam emails as evidence. They demand immediate action and threaten legal consequences. Which response best addresses the situation professionally?
Suggest that the increase in spam is likely due to the client's employees clicking on phishing emails, not the network upgrade
Immediately revert the network upgrade to appease the client and avoid potential legal issues
Acknowledge the concern, propose an immediate security audit, and offer to involve senior management in addressing the findings
Deny any connection between the network upgrade and increased spam, explaining that correlation doesn't imply causation