The Dow Jones Industrial Average closed down 572 points Friday amid ongoing fears over a potential trade war between China and the United States.
Facebook announced Wednesday that information of up to 87 million people may have been improperly shared with data firm Cambridge Analytica.
The United States proposed another set of tariffs on a range of Chinese-made products worth about $50 billion in retaliation for discriminatory trade policies.
Millions of customer records stored on Panera's website were leaked over a period of eight months, cybersecurity analysts said Monday.
The Dow Jones Industrial Average fell more than 450 points Monday as tech stocks dropped and a potential trade war loomed over the market.