) After graduating from college, Rob Johnson experienced some difficulty in finding full-time employment. Trying to make ends meet, Rob used all of his saving to buy a significant number of shares in small, low-priced, thinly traded penny stocks. He then uses spam e-mails and blog postings to disseminate overly optimistic information about the company in hope to drives up the company's stock price. He is waiting to sell his shares to investors and pocket a profit. He is engaged in A) internet pump-and-dump. B) Bluesnarfing. C) vishing. D) typosquatting.