Facebook (FB - Get Report) shares lost some $50 in market value from Monday to Tuesday amid data security concerns. 

CEO Mark Zuckerberg has yet to come out and publicly address these fears.

Last Friday, Facebook's market cap stood at $542 billion, compared to roughly $494 billion early Wednesday. That's a $50 billion decline, which is more than the entire market caps of Snap SNAP, Twitter (TWTR - Get Report) , Ford (F - Get Report) and Delta Air Lines (DAL - Get Report) .

TheStreet Podcast | Facebook: How to Protect Your Data

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