Emily Sullivan

Updated 2:38 p.m. ET

As people along the East Coast, Gulf of Mexico and the Caribbean were preparing for their day around 8:30 a.m. ET, a smartphone push notification warned of a possible tsunami.

The threat, as it turned out, was nonexistent, though there is some disagreement over who is at fault for the erroneous message.

The National Weather Service tells NPR that it was a "test message" released by at least one private company as an official warning. In a statement, spokesperson Susan Buchanan said:

Kaspersky Lab, a massive, Russian cybersecurity company, sued the Trump administration in U.S. federal court on Monday, arguing that the American government deprived it of due process rights when Homeland Security Secretary Elaine Duke banned its software from U.S. government agencies in September.

Many potential emergency room patients are too sick to drive themselves to a hospital. But an ambulance can cost hundreds or thousands of dollars without insurance.

This where a popular ride-sharing app can step in, while also freeing up the ambulances for those who need them most.

In an effort to curb a reputation of faulty policy enforcement — and to "make Twitter a safer place" — Twitter says it will enforce a fresh set of guidelines to reduce abusive and violent content, beginning today.

The new rules target hate symbols, abuse and unwanted sexual advancements. One clause effectively prohibits accounts from associating with hate groups:

Graduate students around the country walked out of their classes, office hours, and research labs to protest the House Republican tax plan Wednesday.

"This plan is going to be disastrous for higher ed," said Jack Nicoludis, a Harvard graduate student in chemistry, who helped organize a protest on the campus. He said the bill would more than double his taxes.

The most memorable part of this holiday shopping should be an amazing deal you found — not having to jump through endless hoops trying to reclaim your identity.

U.S. consumers are concerned about their personal information and identities during the holiday season, according to a survey by Discover. But these concerns won't affect how they shop, the survey showed.

Pages