This title is misleading and implies a breach in privacy on Google+. While that's technically true, the article is actually about how Google has recognized the problem and is currently fixing it.
"First, when you have a post that is defined as Limited (anything that you haven’t shared publicly) other people will no longer be able to share that content. Previously, once you shared it, others could link to it and that created a privacy problem that Google wanted to fix in the post-Buzz world."
The original title worked just as well.