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.
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.
没有评论:
发表评论