Google Groups spam massages issue escalated for further investigation

Google Groups users are complaining that they are getting thousands of spam text messages and are unable to block them.

The role of ESPs in blocking Spam - Abusix

Is an email from alerts@account.chime.com a scam/phishing? : r/chimefinancial

Free G Suite]: How to fix rejection of email due to spam classification to group support@xyz.com? - Google Workspace Admin Community

The Great Google Groups Spoofing Scandal: How a Bug Allowed Deception to Flourish, by e11i0t

Google Groups - Use your Google Group as an email list

Anatomy of an Account Takeover

Google Groups

Act Now to Stop Being Spammed Via Google Groups, Thu 24 May 2012, Blog

Gmail blocked 18M phishing and malware emails using COVID-19 lures