The proposed solution is integrated in an existing IoT
middleware, named NetwOrked Smart objects (NOS) [5].
NOS are conceived as computationally powerful devices
connected to create a distributed processing and storage
layer able to process the data acquired from large-scale IoT
deployments close to the actual data sources. NOSs collect
the data generated by nearby IoT devices, process them
and finally transmit the processed data on a publish/subscribe
broker. Such a middleware includes provisionings
for users and applications to dynamically specify the level
of security and data quality suitable for their own purpose.
The distributed architecture automates the deployment of
adequate filters for ensuring that only qualified data is
being used by the actual service. This represents a clear
innovation over conventional one-size-fits-all approaches,
which provide the same information to all consumers,
often without considering his/her requirements in terms
pf security, privacy and data quality.