1. Yahoo cyber attack

Shares in Yahoo are expected to drop Thursday after the company admitted to another hack that may have affected more than 1 billion accounts.

The breach dates back to 2013 and is thought to be separate from a massive cybersecurity incident announced in September.

The new hack threatens Verizon's $4.8 billion deal to buy Yahoo, given the hit to Yahoo's brand.

"As we've said all along, we will continue to evaluate the situation as Yahoo continues its investigation," Verizon said in a statement Wednesday. "We will review the impact of this new development before reaching any final conclusions."

2. Global market overview

U.S. stock futures are holding steady after slipping a bit on Wednesday.

Investors were in a negative mood yesterday after the Federal Reserve hiked interest rates, which was widely expected.

European markets are mixed in early trading. Asian markets are mostly closing the day with losses.

Oil prices are recovering a bit after falling Wednesday in reaction to the rate hike.

3. Earnings and economics

Adobe Systems and Oracle are the two key companies reporting earnings on Thursday after the close.

U.S. inflation data for November is set to be released at 13:30 GMT.

And the Bank of England is making its interest rate decision. It's widely expected to keep rates unchanged to help the economy deal with the bumpy road to Brexit, even though inflation is rising.

Venezuela is scheduled to introduce new cash into circulation to deal with extreme inflation that has made its money essentially worthless.

The biggest bill, worth 100 bolivars, is being phased out as it's only worth about two cents, based on the unofficial exchange rate.

It's planning to introduce a number of new bills, with the biggest bill worth 20,000 bolivar.

4. Dollar jumps after Fed decision

The U.S. Dollar surged to its highest levels in 14 years on Thursday, after the Federal Reserve hinted that U.S. interest rates could rise faster in 2017 than investors had been anticipating, and hiked rates for the first time in a year.

The 25-basis point increase in the central bank's benchmark interest rate had been widely expected by financial markets, but the signals that rates were likely to rise three times in 2017 instead of just twice surprised investors.

The Fed's policy meeting was the first since the U.S. election victory of Donald Trump, who investors expect to drive up inflation and boost growth with a program of huge fiscal expansion.