As the year 2023 comes to a close, the question arises: What can we learn from the perspective of cybersecurity? As the dust of the year settles and the numbers emerge, usually in the first quarter of the following year, it will likely become apparent that the known trends continue. As you read on, we document the largest and most sensational cyber attacks of 2023 as soon as they happen. We provide some technical analyses, insights, and where possible, lessons that can be drawn from them.