The internet is filled with modified ISO files containing malware. To verify you have a genuine "DM" copy:
A full-disk encryption tool. For businesses handling sensitive data, BitLocker is mandatory. The OEM DM version allows you to encrypt the system drive without third-party tools. win 8 rtm professional oem dm
The combination of and DM creates unique legal and practical restrictions. If you find an ISO or a key online labeled "win 8 rtm professional oem dm," proceed with extreme caution. The internet is filled with modified ISO files