Internet billionaire Reid Hoffman apologized on Wednesday for funding a group linked to a “highly disturbing” effort that spread disinformation during last year’s Alabama special election for U.S. Senate, but said he was not aware that his money was being used for this purpose. Hoffman’s statement is his first acknowledgement of his ties to a campaign that adopted tactics similar to those deployed by Russian operatives during the 2016 presidential election. In Alabama, the Hoffman-funded group allegedly used Facebook and Twitter to undermine support for Republican Roy Moore and boost Democrat Doug Jones, who narrowly won the race. Hoffman, the...