We invite you to the next QWorld seminar. In this talk, Ronald de Wolf will consider the potential impact that the nascent technology of quantum computing may have on society. He focuses on three areas: cryptography, optimization, and simulation of quantum systems. He will also discuss some ethical aspects of these developments, and ways to mitigate the risks. Based on: R. de Wolf. The potential impact of quantum computers on society. In Ethics and Information Technology, 19(4):271-276, 2017 https://arxiv.org/abs/1712.05380