Active Directory, the Microsoft directory service for connecting users with network resources, is used by more than 90% of all Fortune 1000 companies and many more besides. So it’s no surprise that it’s a giant target for malicious hackers. That also means a lot of attention for the security companies that are building tools to protect and recover Active Directory (AD) services. On Thursday, Semperis, a Hoboken, NJ, startup focused on AD protection, said it had raised $125 million from J. P. Mor...