Jura F90 coffee pwned

If you own one of the Jura F90 cof­fee mak­ers with the Jura Inter­net Con­nec­tion Kit you should know that there are some un-patchable soft­ware vulnerabilities:

Fun things you can do with a Jura cof­fee maker:
1. Change the pre­set cof­fee set­tings (make weak or strong cof­fee)
2. Change the amount of water per cup (say 300ml for a short black) and make a pud­dle
3. Break it by engi­neer­ing set­tings that are not com­pat­i­ble (and mak­ing it require a service)

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