Online advertising

Twitter refines political ad rules

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Twitter announced updates to its new political ad ban on Friday, clarifying how it will define political ads and what exceptions exist for certain advertisers.

Why it matters: The new details include bans on specific advertising micro-targeting, which is something that industry leaders and regulators have been calling for in light of research and reporting showing how micro-targeting can be abused to spur misinformation.

States to expand Google probe

A photo of Google's logo.
Photo: Pedro Fiúza/NurPhoto via Getty Images.

The multi-state antitrust probe into Google will expand beyond the advertising business to search and Android, CNBC reports.

Why it matters: Google is already facing investigations into potentially monopolistic behavior on many fronts, and the expansion of the states' probe will further widen the scrutiny.