The hackers accessed name, email addresses or phone numbers from those 29 million accounts.
Hackers stole neither personal messages nor financial data and did not use their access to accounts users' accounts on other websites, the company said.
Rosen said Facebook is cooperating with the ongoing FBI investigation into the breach, but would not give any details on who the hackers were or where they were based.
Between July 2017 and September 2018, attackers accessed Facebook and created a security vulnerability that allowed them to retrieve access tokens to take over people's accounts.
Users can check whether they were affected, and what information was accessed, by visiting Facebook's help center.
A company executive said on a conference call that Facebook will not provide country-by-country breakdowns of the affected users.
This is the world’s longest flight, filled with uniqueness
Here's hoping that nobody on the flight gets jet lag because with a flight that long, it would probably take two weeks to recover. The plane can now hold about 43,590 gallons of fuel, or more than 270 gallons per passenger on a full flight.
Michael Bloomberg Goes Home - to the Democratic Party
Last month Bloomberg told the New York Times that, if he were to run for president, he would "have to run as a Democrat". Bloomberg, 76, was a longtime Democrat who became a Republican before running for mayor of the largest USA city in 2001.
IMF warns Pakistan against ‘excessive loans’ from China
Against a basket of currencies, the yuan has depreciated less. "We will have to take a loan to support the falling economy". China and the U.S. trade war might also unleash an inflation surge worldwide. "We will get out of this".
A Facebook spokeswoman told the BBC it would not be taking this step "at this time". Facebook then goes into some detail on how it all went down, which starts with the attackers already having access to some accounts.
Hackers accessed much more private information in a recent Facebook breach than the social media giant previously revealed.
Once they had the tokens for the seed accounts, Rosen said the attackers used the tokens to access the 400,000 accounts and deployed scripts to harvest even more tokens at a larger and automated scale. While he declined to say what Facebook officials know about the attackers or their motivations for stealing the data, he said Facebook has no reason to believe the hack had any connection to the midterm elections scheduled for next month. Out of 30 million total impacted users, 1 million didn't have any data stolen; 15 million had their names and contact details stolen, but if you belong to the rest of 14 million users then everything from your contact details to devices used to your search history was up for grabs.
"People's privacy and security is incredibly important and we are sorry this happened", said Guy Rosen, Facebook's vice-president of product management. There was no Messenger content exposed, unless the affected person was a Page admin whose page received messages from someone, Facebook said.
With an initial set of accounts under their control, the attackers, said Rosen, exploited the vulnerable code to run a script that collected access tokens from their friends and the friends of their friends, representing a group of about 400,000 people.
She said the west coast was "not out of the woods" in terms of strong winds and there was still a danger to people on the roads. That in itself is likely to bring disruption to roads and there is likely to be some bridge closures and power outages.
Many observers expected that would trigger a sell-off in the stock market as investors flooded their cash into Treasurys. The 10-year Treasury yield rose to 3.22 percent from 3.20 percent late Tuesday after earlier touching 3.24 percent.
The pair adjourned for lunch after West gave Trump a hug and told reporters "I love this guy right here". In the photo, West is wearing a Man United tracksuit top with the initials "WK" embroidered on one side.
The two phones have a notched OLED display, the Pixel 3 sporting a smaller 5.5-inch screen with a resolution of 2160 x 1080. If youre interested, the Pixel Stand is available for pre-order today, it will cost you $79 / 79 / £69.
It's so rare that less than one in a million will get AFM, according to the Center for Disease Control and Prevention . Three cases were reported in 2017, and one other case was reported in Washington since the beginning of 2018.
The adorable bridesmaid , along with brother and page boy Prince George , once again stole the spotlight. Prince George and his cousin Savannah Phillips were spotted goofing around at the back of the chapel.
It has criticized the royals for using weddings as "PR exercises" and expecting taxpayers to pick up part of the tab. Windsor will once again play host to a royal wedding after Prince Harry and Meghan Markle tied the knot in May.
Senior North Korean officials including sports minister Kim Il-guk and foreign affairs minister Ri Su-yong were also at the game. But the result of the discussions was delivered to Pompeo belatedly, which could have prompted him to be slightly displeased.
Arriva Trains Wales is planning to shut the line between 7am and 11am on Friday morning and in the evening. Storm Callum will reach Britain's shores on Friday morning before it barrels across the country.
UK Govt brushes off Brexit threat by N. Irish allies
Cabinet ministers briefed on the Brexit talks said the issue of the Irish backstop was close to being settled, the FT said. Earlier on Thursday, May told Northern Ireland journalists that Irish border talks would likely continue until November.
Facebook announces Portal, Portal
Unlike a regular phone or video call, there's no ringing, and you never have to "answer" the call - they just appear instantly. Portal you can use your voice to start a call, control device settings like volume, and more .
Hurricane Michael Has Arrived
He says the number of rescues remains fluid and there were no reports of deaths so far from the Coast Guard's missions. Panama City was also ravaged by the hurricane, with drone footage showing homes and schools completely torn apart.
Selena Gomez receiving Treatment after "Meltdown"
Selena Gomez has checked into a mental health facility after suffering an emotional breakdown, RadarOnline.com can confirm . In August, her one-time best friend and former Disney co-star Demi Lovato was hospitalized for an alleged heroin overdose.