![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
The text is mainly talking about
A.
the project raised by the DHS to share cyber-threat data with private companies.
B.
the conferences on Internet services between the DHS and private companies.
C.
the cyber-threat to the DHS and private companies.
D.
the DHS and private companies joining together to fight cyber-threat.