Mike in the auditing department contacted the help desk citing multiple issues with his device that involves:
- Word documents, PDFs, and images are not opening
- A pop-up
- Slow performance
Mike states the issues all started after he opened an invoice that a marketing vendor emailed to him. Upon opening up the invoice, he was forced to click several security warnings to view it in his word processor, which of the following MOST likely infected it? The answer choices are below, please provide the correct answer with an explanation.
A. Spyware
B. Crypto-malware
C. Rootkit
D. Backdoor