Please follow the instructions in this post to see if you have any of the suspect certificates installed. In summary, you should check the Trusted Root Certificate store on every computer for certificates from any of the following.
- Sendori
- Purelead
- Rocket Tab
- Super Fish
- Lookthisup
- Pando
- Wajam
- WajaNEnhance
- DO_NOT_TRUSTFiddler_root (Fiddler is a legitimate developer tool but malware has hijacked their cert)
- System Alerts, LLC
- CE_UmbrellaCert