Google Says Curbing Liability Shield Would Make Web Less Safe

Alphabet Inc.’s Google told the US Supreme Court in a filing Thursday that undercutting social media’s legal protections could make the internet less safe and useful for its billions of users.

The company defended social media’s prized legal shield, known as Section 230 of the Communications Decency Act, which will be the subject of a case before the court next month.

Google argued that the justices could break “a central building block of the modern internet” if they choose to narrow Section 230, which protects online companies from being sued over posts from their users.

“The internet would devolve ...