Public cloud server-using botnets increased by 35% from July 2017 to June 2018. Microsofts Azure has been the most used cloud service for use with DDoS attacks, 38.7% of all detected attacks originated from an Azure server. Amazon Web Services comes in second place with 32.7%. Alibaba cloud servers are in distant third at 17.9%, while Google cloud services were the least used. Network administrators must adapt to the new normal, the BYOD (Bring Your Own Devices) and IoT (Internet-of-Things)”]
Source: https://hackercombat.com/cloud-services-used-as-hosts-for-ddos-attacks/