[ti:Facebook, Twitter Identify New Russia-linked Social Media Campaigns] [by:www.51voa.com] [00:00.00]更多听力请访问51VOA.COM [00:00.04]Facebook and Twitter say they have removed numerous false social media accounts [00:07.68]linked to Russia that targeted the American public. [00:14.00]Facebook said in a statement that the network of accounts [00:18.92]appeared to be in the process of building up a following of U.S.-based users. [00:27.36]The network was operated by people in Ghana and Nigeria for individuals in Russia. [00:37.80]Facebook said its investigation found that the accounts had ties to individuals [00:45.28]linked to past activity by Russia's Internet Research Agency. [00:53.16]U.S. officials have accused that group of leading a major disinformation campaign online [01:01.08]in an attempt to influence the 2016 U.S. presidential election. [01:09.36]In some cases, the removed accounts claimed to be nongovernmental organizations or personal blogs. [01:20.12]The accounts on Facebook and on the company's Instagram service attempted to gain users [01:27.00]by posting about issues like black history, fashion, and news about famous Americans. [01:37.64]In total, Facebook removed 49 accounts, 69 Facebook pages and 85 Instagram accounts. [01:49.80]Twitter removed 71 accounts. [01:54.12]Facebook said the accounts did not appear to center on elections. [02:01.16]They also did not include support or criticism of individual political candidates. [02:10.20]Facebook's statement said that while the company is making progress in identifying and stopping such abuses, [02:19.28]the problem represents "an ongoing challenge" it is dealing with. [02:26.44]"That means building better technology, hiring more people and working more closely with law enforcement, [02:34.64]security experts and other companies," the statement said. [02:40.92]Twitter said the accounts it removed dealt mainly with social issues such as race and civil rights, [02:49.36]without favoring any candidate or political ideas. [02:55.84]The latest removals follow a recent report that found Russia's campaign of election interference [03:03.64]has not reduced since 2016 -- and appears to be getting more difficult to discover. [03:11.88]Young Mie Kim, a professor at the University of Wisconsin-Madison created the recent report. [03:21.20]She found that Russia-linked social media accounts were posting about many of the same issues as during the 2016 elections. [03:33.20]These include race relations, gun laws and immigration. [03:40.00]Facebook has since removed those accounts, too. [03:45.44]Last month, the director of the Federal Bureau of Investigation, Christopher Wray, [03:51.76]warned that Russia was still involved in a campaign of "information warfare" [03:58.52]that uses false social media accounts to spread disinformation. [04:05.92]Russia has repeatedly denied interfering in U.S. elections. [04:12.44]I'm Bryan Lynn. 更多听力请访问51VOA.COM