Guardio’s Email Protection has detected a sophisticated email phishing campaign exploiting a 0-day vulnerability in Salesforce’s legitimate email services and SMTP servers. Guardio Labs’ research team has uncovered an actively exploited vulnerability enabling threat actors to craft targeted phishing emails under the Salesforce domain and infrastructure. Those phishing campaigns cleverly evade conventional detection methods by chaining the Salesforce vulnerability and legacy quirks in Facebook’s web games platform. Guardio Labs has disclosed these findings and worked with Salesforce and Meta to close the vulnerabilities and misuse.