Next week, the U.S. Supreme Court will hear two cases that could drastically alter Section 230 of the 1996 Communications Decency Act, a decades-old law that has until now protected technology platforms from liability for content posted by their users.

The two cases, which challenge social media platforms’ liability for terrorist activity, present a narrow question to the Supreme Court, legal professionals say. But some tech companies are anxious that the Court will use this opportunity to reconsider the scope of Section 230’s liability protections.