Private equity firms EQT AB and Vitruvian Partners are working with advisers as they explore strategic options for their investment in cyber insurer CFC, according to people familiar with the matter.The buyout group has appointed Evercore Inc. and Goldman Sachs Group Inc. to prepare London-based CFC for a potential sale or initial public offering, the people said, asking not to be identified discussing private information. A deal could value the company in the region of £5 billion ($6.8 billion), they said. ...