There are a number of news services running a story about a Russian web site posting the gmail and mail.ru credentials of approximately 5 million users.
The 5 million passwords that were posted on the Russian website include a significant number of passwords for Google accounts. These passwords appear to have been acquired over several years worth of phishing campaigns by various hacking groups. Google has reviewed the list and believes that the majority of the accounts on the list have already been suspended or had their password change since the credentials were acquired.
Currently there appears to be no reason to worry about this incident. IT will continue to monitor the situation and work on verifying that no @mtu.edu accounts were on the list.