Huawei's Sec Insight system comes with the function of stream pin.

When there is a large amount of data (such as photos, videos or database files, etc.) that need to be added and unsealed, the user can encrypt and decrypt the data by encrypting the data with the number of watermarks, and the data can be encrypted and decrypted without transmitting a large amount of data over the network

Domain name information collection is the first step in technical means information collection Domain name information can be collected through a domain name lookup website such as hois (single selection).

Trojans due to infection of other files It also destroys computer systems, and at the same time replicates itself, so Trojans have the characteristics of traditional computer viruses.

Which of the following actions are considered measures to ensure access control security?