Every hour, a threat actor starts a new scan on the public web for vulnerable systems, moving at a quicker pace than global enterprises when trying to identify serious vulnerabilities on their networks. The data comes from the Palo Alto Networks Cortex Xpanse research team, who between January and March this year monitored scans from 50 million IP addresses of 50 global enterprises, some of them in Fortune 500. A third of all identified issues related to the Remote Desktop Protocol, a common target for attackers as they can use it to gain admin access to servers.
Source: https://www.bleepingcomputer.com/news/security/hackers-scan-for-vulnerable-devices-minutes-after-bug-disclosure/