Claudette is shocked to discover that her company's data has been stolen, and their Web site shut down, by a malicious ex-employee. She had thought their security was airtight! Two recent changes they made were migrating their database to a private, on-premises cloud and installing IoT devices that communicate with the database continually. What most likely occurred

The answer is "Ex-employee hack IoT firms from Claudette to access them".

Explanation:

Computer system hacking is only a breach between both the access as well as the stealing or misuse of critical information between both computer software from the target system. In this sense, a malicious attacker uses a computer device or even a network to access or illicitly exploit information.