IT Security has replaced the expiring security certificate associated with the MichiganTech SSID present on our wireless network. This change will cause Apple devices to prompt the user to accept the new certificate. It is safe to accept this new certificate. The screenshot accompanying this article shows an example of what an iPhone displays when this happens. This link here shows what you would see on an Apple computer.
Security certificates are made to expire by design. As computer technology evolves, older generations of encryption technology (on which certificates are based) become vulnerable to more powerful computers. By expiring certificates, the risk associated with older technology is mitigated.
This new certificate will not expire until 2016.