# Which Problems Are Solved
The action v2 messages were didn't contain anything providing security
for the sent content.
# How the Problems Are Solved
Each Target now has a SigningKey, which can also be newly generated
through the API and returned at creation and through the Get-Endpoints.
There is now a HTTP header "Zitadel-Signature", which is generated with
the SigningKey and Payload, and also contains a timestamp to check with
a tolerance if the message took to long to sent.
# Additional Changes
The functionality to create and check the signature is provided in the
pkg/actions package, and can be reused in the SDK.
# Additional Context
Closes#7924
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Co-authored-by: Livio Spring <livio.a@gmail.com>
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