Facebook (NASDAQ:FB) now is a typical Warren Buffett case of “Be fearful when others are greedy and greedy when others are fearful". Facebook has come off close to 20% from its peak, mainly on the back of the news that Cambridge Analytica, a client, used personal information harvested from more than 50 million US Facebook profiles without permission to build a system that could target US voters with personalised political advertisements based on their psychological profile. Although the breakout of the news seemed dramatic initially, I believe it is not as dramatic as it seems. Almost all major IT groups, such as Twitter (NYSE:TWTR), Yahoo, Amazon (NASDAQ:AMZN), eBay (NASDAQ:EBAY), etc., have faced similar, or sometimes worse, issues of private and financial details being misused or stolen. None of those companies, or others, were brought down as a result of private users' information being misused - rather operational and competitive weaknesses are what lead to the demise of businesses. With Facebook being a virtual monopoly in its sector, and with the vast majority of users not particularly concerned about the Cambridge Analytica issue, the 20% drop of Facebook’s share price is likely to be one of those one-off discount opportunities that an investor can find.

