Firestorms over Twitter and posts haunting social media users underscore advice being given to law students: watch what you say.

Now “is the time to adjust your privacy settings,” Marta Ricardo, assistant dean and dean of career services at Columbia Law School told Bloomberg Law.

Controversy over Tweets by movie director James Gunn, New York Times journalist Sarah Jeong, and technology journalist Quinn Norton have erupted in 2018, putting a further spotlight on the social media platform whose...