What RSA stands for?

Rivest$-$Shamir$-$Adleman, who designed algorithm for a practical digital signature scheme and for confidential messaging.

Rivest$-$Shamir$-$Adleman, who started a trade organization representing music publishers that together control music distribution in the United States.

Rivest$-$Shamir$-$Adleman, who started an organization that provides technical and legal tools to encourage sharing.

Remote$-$Sharing$-$Access, that uses watermarking as a general approach to regulation through accountability rather than restriction.