When we look at chat, it is one of the most popular types
of applications that exist in the Play Store
and in the App Store.
You often don't even need a data plan to use it.
You could strictly exist on Wi-Fi.
A lot of people get chat applications
because they believe they are secure,
they're required in a workplace, they
are used for team collaboration, or because it's
a easy way that they can chat across their PC, their Mac,
and their mobile device.
For example, at SANS, we use Slack,
and we talk on Slack all the time.
At Cellebrite, we use WhatsApp.
My WhatsApp, I run on my Mac, on my PC,
and on my iPhone all of the time.
So also keep in mind, everything we learned from Section 1
until this point in Section 5, make sure
the data happened on the device.
Chat applications are really supported well
with the commercial tools.
However, you're going to come across something
at some point that's not going to be supported,
and you're going to have to understand
how to parse it yourself.