Emails purporting to be a Cisco critical security advisory are actually part of a phishing campaign trying to steal victims Webex credentials. The campaign urges victims to update only to steal their credentials for Cisco s Webex web conferencing platform instead. The phishing emails are being sent with various attention-grabbing subject lines, such as Critical Update and come from the spoofed email address, meetings@webex[.]com
Source: https://threatpost.com/cisco-critical-update-phishing-webex/154585/