DevNet Associate DEVASC 200-901 Official Certification Guide by Adrian Iliesiu (z-lib.org)

Data Security

Today, all our interactions with the world involve online
systems in some way, and all these systems deal with
data. Data is typically an organization’s most valuable
asset, and it is very often sensitive. Data security is the
process of securing data and protecting it from
unauthorized access. As data traverses various points of
interaction, it needs to be secured at all these various
places. Data needs to be protected in three places, as
shown in Figure 14-5:

Network (data in motion)

Storage (data at rest)

Memory (data in use)

Figure 14-5 Data Security

Table 14-3 shows each of these types of security and
describes some ways to secure or protect each type.

Table 14-3 Data Security Types

Data TypeDescriptionExamples

D a t a i n

Data travels across various networks and

entities. It is prone to be inspected, and data

can be stolen.

Transport Layer Security (TLS) is a widely

adopted security protocol designed to

facilitate privacy and data security for

communication over the Internet. A primary

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