The ad, which took the form of a letter from Zuckerberg, apologized and explained that the company is "now taking steps to ensure this doesn't happen again," including measures that stop third-party apps from "getting so much information" and "limiting the data apps get when you sign up."
“This was a breach of trust and I’m sorry we didn’t do more at the time,” the letter concluded. “I promise to do better for you.”
The ad appeared in The Observer, The Sunday Times, Mail on Sunday, Sunday Mirror, Sunday Express, Sunday Telegraph, The New York Times, Washington Post, and Wall Street Journal. Many noted the conspicuous absence of an apology in Zuckerberg's first post to Facebook addressing the incident before he finally appeared on CNN and verbally apologized. The company seems to be making increasingly direct attempts at winning back the public's trust.
h/t CNN, The Verge