After Saturday’s power outage, tens of thousands of households in southwest Berlin are still without power – and will probably remain so until the end of the week. Johannes Rundfeldt is a volunteer spokesman for AG Kritis, a working group of independent experts for various sectors of critical infrastructure.

THE TIME: Recently there have been several attacks on infrastructure. On submarine cables, Deutsche Bahn systems. And now, within a few months, the power supply appears to be on again Berlin. Is public supplies, such as electricity, water, internet and mobility, particularly at risk right now?