OPC.HDA_IOPCHDA.AsyncAnnotations
Description
This indicates detection of the OPC HDA IOPCHDA AsyncAnnotations command.OPC (OLE for process control), currently known as "OPen Connectivity", is a standards specification by the OPC Foundation designed for communication between multi-vendor devices and control applications. OPC Historical Data Access (OPC HDA) is used to exchange archived data, i.e. a data historian, as opposed to real-time data from field sensors.
Affected Products
OPC HDA
Impact
Unexpected network communication
Technology
Browser-Based, Network-Protocol, Client-Server, Peer-to-Peer, Cloud-Based, Mobile-Device
Behavior
- Reasonable