2019年12月25日星期三

Facebook Discovers Fakes That Show Evolution of Disinformation

Researchers said the profiles, linked to the Epoch Media Group, used photos generated by artificial intelligence in a preview of an “eerie, tech-enabled future of disinformation.”
Credit...Graphika/The Atlantic Council’s Digital Forensic Research Lab

Facebook said on Friday that it had removed hundreds of accounts with ties to the Epoch Media Group, parent company of the Falun Gong-related publication and conservative news outlet The Epoch Times.
The accounts, including pages, groups and Instagram feeds meant to be seen in both the United States and Vietnam, presented a new wrinkle to researchers: fake profile photos generated with the help of artificial intelligence.
The idea that artificial intelligence could be used to create wide-scale disinformation campaigns has long been a fear of computer scientists. And they said it was worrying to see it already being used in a coordinated effort on Facebook.
While the technology used to create the fake profile photos was most likely a far cry from the sophisticated A.I. systems being created in labs at big tech companies like Google, the network of fake accounts showed “an eerie, tech-enabled future of disinformation,” said Graham Brookie, director of the Atlantic Council’s Digital Forensic Research Lab.
Scientists have already shown that machines can generate images and sounds that are indistinguishable from the real thing or spew vast volumes of fake text, which could accelerate the creation of false and misleading information. This year, researchers at a Canadian company even built a system that learned to imitate the voice of the podcaster Joe Rogan by analyzing audio from his old podcasts. It was a shockingly accurate imitation.
The people behind the network of 610 Facebook accounts, 89 Facebook Pages, 156 Groups and 72 Instagram accounts posted about political news and issues in the United States, including President Trump’s impeachment, conservative ideology, political candidates, trade and religion.
“This was a large, brazen network that had multiple layers of fake accounts and automation that systematically posted content with two ideological focuses: support of Donald Trump and opposition to the Chinese government,” Mr. Brookie said in an interview.
Image
Credit...Graphika/The Atlantic Council’s Digital Forensic Research Lab

The Atlantic Council’s lab and another company, Graphika, which also studies disinformation, released a joint report analyzing the Facebook takedown.

The Epoch Media Group denied in an email sent to The New York Times that it was linked to the network targeted by Facebook, and said that Facebook had not contacted the company before publishing its conclusions.
The people behind the network used artificial intelligence to generate profile pictures, Facebook said. They relied on a type of artificial intelligence called generative adversarial networks. These networks can, through a process called machine learning, teach themselves to create realistic images of faces, even though they do not belong to a real person.
Nathaniel Gleicher, Facebook’s head of security policy, said in an interview that “using A.I.-generated photos for profiles” has been talked about for several months, but for Facebook, this is “the first time we’ve seen a systemic use of this by actors or a group of actors to make accounts look more authentic.”
He added that this A.I. technique did not actually make it harder for the company’s automated systems to detect the fakes, because the systems focus on patterns of behavior among accounts.
Ben Nimmo, director of investigations at Graphika, said that “we need more research into A.I.-generated imagery like this, but it takes a lot more to hide a fake network than just the profile pictures.”
Facebook said the accounts masked their activities by using a combination of fake and authentic American accounts to manage pages and groups on the platforms. The coordinated, inauthentic activity, Facebook said, revolved around the media outlet The BL — short for “The Beauty of Life” — which the fact-checking outlet Snopes said in November was “building a fake empire on Facebook and getting away with it.”

Mr. Gleicher said Facebook began its investigation into The BL in July, and accelerated its efforts when the network became more aggressive in posting this fall. It is continuing to investigate “other links and networks” tied to The BL, he said.
Facebook said the network had spent less than $9.5 million on Facebook and Instagram ads. On Friday, Facebook said The BL would be banned from the social network.
The Epoch Times and The BL have denied being linked, but Facebook said it had found coordinated, inauthentic behavior from the network to the Epoch Media Group and individuals in Vietnam working on its behalf.
The Epoch Media Group said in its email that The BL was founded by a former employee and employs some of its former employees. “However, that some of our former employees work for BL is not evidence of any connection between the two organizations,” the company said.
A Facebook spokeswoman said executives The BL were active administrators on Epoch Media Group Pages as recently as Friday morning.
In August, Facebook banned advertising from The Epoch Timesafter NBC News published a report that said The Epoch Times had obscured its connection to Facebook ads promoting President Trump and conspiracy content.
Twitter said on Friday that the social network was also aware of The BL network, and had already “identified and suspended approximately 700 accounts originating from Vietnam for violating our rules around platform manipulation.” A company spokeswoman added that its investigation was still open, but Twitter has not identified links between the accounts and state-backed actors.

2019年12月23日星期一

Facebook, Twitter Remove AI-Powered Fake Accounts With Pro-Trump Messages

Facebook, Twitter Remove AI-Powered Fake Accounts With Pro-Trump Messages
Online campaign involved hundreds of accounts and more than $9 million spent on Facebook advertising

The campaign aimed to push pro-Trump political messages.PHOTO: EVAN VUCCI/ASSOCIATED PRESS

     
By Jeff Horwitz and Robert McMillan
Updated Dec. 20, 2019
Facebook Inc. and Twitter Inc. have taken down a global network of fake accounts used in a coordinated campaign to push pro-Trump political messages, including some that used artificial intelligence tools to try to mask the behavior, the companies and outside research firms they worked with said on Friday.

The move targeted a U.S.-based media company that also operates out of Vietnam called The BL, which, Facebook alleges, used computer-generated profile pictures to cover up the orchestrated nature of its activities. Facebook linked the company to the Epoch Media Group, which has had ties to the Falun Gong movement, a spiritual movement based in China which has clashed with the Chinese government and supported President Trump’s reelection.

The BL, also known as the Beauty of Life, is “currently working with Facebook to resolve the issue,” said Orysia McCabe, the website’s editor in chief. She didn’t say how the company planned to settle the matter with Facebook.

In a statement posted to his company’s website, Epoch Media Group Publisher Stephen Gregory denied any connection between BL and his company, saying that BL was “founded by a former employee, and employs some of our former employees.” Epoch Media is neither owned nor operated by Falun Gong, the company has said.

A Facebook spokeswoman responded by saying that executives of The BL were active administrators on Epoch Media Group-controlled pages as recently as Friday morning, when The BL accounts were deleted by Facebook.

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The use of AI-generated photos to pass off the accounts as real represents a new tool for those trying to use fake accounts to amplify their message on social-media platforms. It adds to the longstanding practice of stealing other people’s photos, using stock images for profile pictures and hijacking other peoples’ accounts. The use of AI comes as Facebook and others are using their own tools to help spot fake accounts.

The large deployment of AI-generated photos in this way “was the first time we’ve seen this at scale,” said Ben Nimmo, of Graphika, an social-media analytics firm that worked with Facebook to investigate the network.

The tech giant said the BL, which the social-media company has now banned from its platform, ran 610 accounts, 89 pages, 156 groups on Facebook—in addition to 72 accounts on Facebook-owned Instagram. The fake accounts accrued more than 55 million followers, Facebook said, adding most of them were outside of the U.S. The accounts targeted people in Vietnam as well as global audiences speaking Chinese and Spanish, Facebook said.

The network of fake accounts bolstered its efforts by spending more than $9 million on advertising on the platform.

The BL itself had more than 1.5 million Facebook followers as of Tuesday, according to a version of its Facebook page captured by the Internet Archive. Facebook said. Graphika’s Mr. Nimmo said the network, by followers, was the biggest found to date.

A Twitter spokesman said the company “identified and suspended approximately 700 accounts originating from Vietnam for violating our rules around platform manipulation—specifically fake accounts and spam.” The company did not identify who owned the accounts.

The accounts had a relatively low number of followers, he said, and have been permanently suspended. Twitter said it was still investigating but “our initial findings have not identified links between these accounts and state-backed actors.”

Facebook said it may remove additional accounts.
“We are continuing to investigate all linked networks, and will take action as appropriate if we determine they are engaged in deceptive behavior,” Nathaniel Gleicher, Facebook’s head of security policy, said in a blog post. Mr. Gleicher said “open source reporting” aided its investigation.

Last week, one of Facebook’s own fact-checking partners, Lead Stories, alleged that The BL had been generating fake profiles using pictures from ThisPersonDoesNotExist.com, a website showcasing the ease of producing photos that look realistic using artificial intelligence.

Facebook asked researchers from the Digital Forensic Research Lab, an arm of the Atlantic Council, a non-partisan think tank, and Graphika to conduct an independent analysis of the network, according to a report by the two groups.

“This case shows that there is a huge market demand for boosting online engagement and increasingly sophisticated methods to do so in a manipulative or inauthentic way,” Graham Brookie, director of the Digital Forensic Research Lab said. The network stood out, he said, because of how flagrantly it used manipulative tactics.
Fact-checking site Snopes, which isn’t a Facebook partner, faulted the social-media company for not acting sooner. It said it had previously alerted Facebook to BL’s alleged behavior and, in recent months, provided a list of allegedly fake accounts. Vinny Green, Snopes’s vice president of operations, argued that Facebook’s failure to act earlier demonstrates its inability to protect political discussion online.

Mr. Gleicher acknowledged that the investigation had taken Facebook five months to complete, but said that time was needed to ensure Facebook had caught the entire network of accounts.

“This is the soonest we could taken action on it,” he said, adding that the age of the networks of accounts that Facebook has removed is dropping as the company gains experience combating organized abuse.

Separately, Facebook also took down a network of more than 400 pages, groups and Facebook and Instagram accounts it linked to inauthentic behavior in the country of Georgia.

What’s that? A look at the Epoch Times billboards popping up across Michigan

An Epoch Times billboard on I-196 west of Grand Rapids. (Photo by Rose White | MLive)Rose White | MLive By Rose White | rwhite@mlive.com The...