A recent security breach on the LinkedIn network exposed passwords in the approximity of 6.5 million accounts. We should take extra care in protecting our data, including other accounts that may obtain our personal information. Using strong passwords (the first line of defense) and updating on regular basis can help protect our accounts.
Here is an article from Network World discussing how we can all safeguard ourselves online:
http://www.networkworld.com/news/2012/061412-linkedin-safeguard-260200.html?hpg1=bn