Dear RIOTers,
the fourth RIOT Summit (https://summit.riot-os.org/) will take place in Helsinki/Espoo, Finland at the Aalto Design Factory on September 5-6, 2019. The first day is dedicated to single-track presentations and demos. The second day allows for breakout sessions and coding. If you want to attend, please register as soon as possible: https://riot-summit2019.eventbrite.com/.
**Talks**
Keynote by Jari Arkko (former IETF Chair and Senior Expert at Ericsson Research) on "Call for Action: The Internet Threat Model Needs a Change".
More speakers: http://summit.riot-os.org/2019/#speakers
**Social*
After the talks of the first day, we have organized a casual social at Suomenlinna, a UNESCO World Heritage site (https://www.suomenlinna.fi/en/conferences-and-banquets//). Food is sponsored.
**Hotels**
There are a couple of nearby accommodations in Espoo (https://summit.riot-os.org/2019/#accommodations) but you can also choose hotels in Helsinki.
**Registration**
Participation at the RIOT Summit is free of charge. However, registration is required: https://riot-summit2019.eventbrite.com/
**Supporters**
We gratefully thank the following companies for their generous support: Cisco, Ericsson, wolfSSL, Z�hlke.
We also thank Freie Universitaet Berlin, HAW Hamburg, and INRIA.
Looking forward to meet all of you in Helsinki/Espoo!