Cloud-based email threats capitalising on chaos of COVID-19 08 Mar 2021 Cloud-based email threats are capitalising on the chaos of COVID-19, according to Trend Micro. The cloud security firm says it blocked 16.7 million high-risk email threats that slipped past webmail providers' native filters, an increase of nearly a third on 2019 figures. The new statistics are provided by Trend Micro's Cloud App Security (CAS), an API-based solution that provides second-layer protection for Microsoft Exchange Online, Gmail, and a host of other services. "COVID-19 forced many organisations to accelerate their digital adoption plans, and SaaS apps have become indispensable to remote workers," says Tony Lee, head of consulting at Trend Micro Hong Kong and Macau.