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What's the difference between "good" bots and "bad" bots? And why doesn't Snapchat have a fake news problem? Here's a quick guide to some of the discussions that might come up during the hearings this week.

Expand chart
Data: Imperva Incapsula Bot Traffic Report. Based on 16.7+ billion visits to 100,000 randomly-selected domains on the Incapsula network; Chart: Lazaro Gamio / Axios

More than half of internet traffic is bots. Bots have always played a major role in our internet ecosystem, although not all bots are bad. (Some, for example, are used to make our search experiences more accurate.) But the bots used to spread fake news are usually bad, and bad bots make up roughly 29% of internet traffic.

Accessibility attracts bots and fake accounts: Google, Facebook and Twitter want to make it easy for users all over the world to get on their platforms, because they believe in free speech and open access. But this level of openness means the barrier to entry on these platforms isn't just low for users, but for bots and bad actors as well.

  • You'll notice that there aren't many fake accounts or bots on Snapchat, because tight networks of friends interact ephemerally, rather than a broadcast network built on friend discoverability and links that last longer than 24 hours. According to a Snap spokesman, this means the economic payoff is low for spamming, phishing, or circulating images or links via bots compared to the effort required.

Bots are programmed to perform simple internet tasks repeatedly: You can program a bot to like, share, or comment on something. Fake news perpetrators create fake stories that are often amplified by a network of bots that automatically like, share or comment on the content. Algorithms elevate content that is popular, further amplifying the effect.

The Internet Research Agency is the source of many Russian bots: It employs a large staff to spread fake news and disinformation and has been using bots to spread Russian propaganda for years.

Bots don't just spread fake news — they can create it. Distil Networks, a cybersecurity company that focuses on bot detection and mitigation, says it's continually warning its digital publishing clients about ways bad bots are used to skew online polls.

  • "Online polls have almost no verification to an individual," says Chief Product and Strategy Officer Rami Essaid. "If you go in an online survey, there's not an individualized SSN, or license. They look at people based on cookie's or IP addresses that can easily be mimicked through bots by bad actors."

Go deeper

Instagram's boss faces Congress' questions on harm to teens

Photo illustration: Shoshana Gordon/Axios. Photo: Matt Winkelmeyer/Getty Images for WIRED

The head of Instagram will find himself in Congress' crosshairs for the first time Wednesday in the one area lawmakers have shown they are willing to pass tech regulations — protecting youngsters online.

Why it matters: Republicans and Democrats have found common ground in grilling tech companies on how their products harm children, especially after revelations in The Wall Street Journal about Instagram's potential harm to the mental health of teen girls.

Jan. 6 committee to start contempt proceedings against Meadows

Photo: Olivier Douliery/AFP via Getty Images

The Jan. 6 select committee plans to move forward with contempt proceedings against former White House chief of staff Mark Meadows for his refusal to comply with the panel's subpoena.

Why it matters: The committee has used the threat of contempt — and the associated financial and reputational costs — to try to ensure evasive witnesses sit for their depositions.

Complaint to FTC: Amazon search results full of potentially deceiving ads

Photo: Nigel Kirby/Loop Images/Universal Images Group via Getty Images

Amazon does not sufficiently distinguish between its search results and paid ads, potentially "deceiving millions of consumers," according to a complaint filed to the Federal Trade Commission.

Why it matters: Joan Moriarty, research director for the Strategic Organizing Center, a coalition of labor unions that filed the complaint, told the Washington Post the group is "very hopeful" that the FTC will investigate the complaint because Lina Khan (D), a known Amazon critic, is now chair.