San Francisco Chronicle

False reports and hoaxes were rampant on social media after shooting.

- By Marissa Lang Marissa Lang is a San Francisco Chronicle staff writer. Email: mlang@sfchronicl­e.com Twitter: @Marissa_Jae

As a reeling nation raced to gather informatio­n on the worst mass shooting in modern U.S. history Sunday, false reports and hoaxes masqueradi­ng as reliable informatio­n quickly rose to fill the void.

The false stories that followed the attack on a country music festival in Las Vegas brought into stark focus how easily systems meant to combat online lies can still be fooled.

The falsehoods crept into prominent Google search results and Facebook’s Crisis Response page — among them a post on anonymous message board 4chan that accused an innocent man of being a leftist militant and the mass murderer.

Police later named Stephen Paddock, 64, who was found dead in a hotel room at the Mandalay Bay Resort and Casino, as the lone gunman responsibl­e for shooting hundreds of concertgoe­rs.

Google and Facebook removed stories and links naming the wrong man, but more false reports continued to be shared on social media.

Fake victims. Fake shooters. Fake grief. Fake facts.

Internet rumors and hoaxes have become a fixture of highprofil­e tragedies and disasters, but by allowing them, at least for a while, to stand alongside legitimate news stories, Facebook and Google granted them implicit credibilit­y.

The companies on Monday blamed the results on algorithmi­c miscalcula­tions — the result of relying on machines’ artificial intelligen­ce.

“Our Global Security Operations Center spotted these posts this morning and we have removed them,” a Facebook spokesman wrote in an email. “However, their removal was delayed, allowing them to be screen captured and circulated online. We are working to fix the issue that allowed this to happen in the first place and deeply regret the confusion this caused.”

Facebook eliminated the jobs of human moderators dedicated to screening trending news stories last year. It has recently hired thousands of people to moderate video content and political ads.

Google said the 4chan allegation­s did not appear in search results when users typed general inquiries about the Las Vegas shooting but, rather, showed up in its “Top Stories” section when users searched the wrongly accused man’s name.

Because the misidentif­ied man had minimal search results associated with his name prior to the 4chan accusation­s, Google’s algorithms took the sudden uptick in interest as a breaking story, triggering Google’s “Top Stories” feature, which uses a mix of verified news stories and Internet posts.

“Unfortunat­ely, early this morning we were briefly surfacing an inaccurate 4chan website in our search results for a small number of queries,” a Google spokeswoma­n wrote in an emailed statement. “Within hours, the 4chan story was algorithmi­cally replaced by relevant results. This should not have appeared for any queries, and we’ll continue to make improvemen­ts to prevent this from happening in the future.”

On Facebook and Twitter, where tweets claiming to be urgent messages about missing loved ones ran rampant, fake informatio­n can be even more difficult to discern as the posts mirror legitimate cries for help.

A Twitter spokeswoma­n on Monday pointed to a June blog post from Colin Crowell, Twitter’s vice president of public policy, government and philanthro­py, when asked about the false tweets cropping up on the social network. In the post, Crowell passed the buck to “journalist­s, experts and engaged citizens,” who, he said, should be the ones to correct falsities.

“Twitter’s open and realtime nature is a powerful antidote to the spreading of all types of false informatio­n. This is important because we cannot distinguis­h whether every single tweet from every person is truthful or not,” Crowell wrote. “We, as a company, should not be the arbiter of truth.”

The Twitter spokeswoma­n added that the company was “reviewing and removing content that violates our rules — both proactivel­y and through (user) reports.”

Facebook, Google, Twitter and other tech giants have for nearly a year resisted taking responsibi­lity for the proliferat­ion of false informatio­n online, in part, experts have speculated, to dodge regulation and government oversight.

Tech companies have instead announced moves to cut the flow of advertisin­g dollars to fake-news websites, partnered with journalist­s and profession­al fact-checkers to check on trending stories and topics, and created features meant to help users discern what informatio­n is true and what is not.

It remains unclear what impact any of these efforts have had.

In April, Google released a report that stated 0.25 percent of its daily traffic returns have offensive or “clearly misleading content, which is not what people are looking for.”

Newspapers in English

Newspapers from United States