A large-scale brute force password attack using almost 2.8 million IP addresses is underway, attempting to guess the credentials for a wide range of networking devices, including those from Palo Alto Networks, Ivanti, and SonicWall. […]

from https://www.bleepingcomputer.com/news/security/massive-brute-force-attack-uses-28-million-ips-to-target-vpn-devices/