Webinar: How malicious OAuth apps can lead to Google Workspace breaches
Webinar to detail how malicious OAuth apps and social engineering breach Google Workspace.
Attackers are leveraging malicious OAuth applications combined with social engineering to gain unauthorized access to Google Workspace data, bypassing the need for stolen passwords. A forthcoming webinar will dissect two such attacks, illustrating how users are tricked into granting permissions to harmful apps and the subsequent impact on organizations. The session will also focus on essential security controls and incident response strategies for defending cloud environments.
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The lesson from this incident
Full lessonAttackers are exploiting OAuth application authorization flows combined with social engineering to trick users into willingly granting third-party apps broad access to Google Workspace data — no stolen password required. This is particularly dangerous because traditional credential-based defenses like MFA do not protect against OAuth consent phishing. Once a malicious app is authorized, attackers can silently access emails, files, calendars, and contacts with persistent access that survives password resets. Organizations often lack visibility into which OAuth apps have been granted access, making detection and response slow. This attack vector highlights that user permissions and app governance are as critical as password hygiene.
What helps against this
How we list vendors
- Identity threat detection and response (ITDR)
Attackers who log in with real, stolen credentials get noticed.
- SaaS security posture management (SSPM)
Business apps like Microsoft 365 and Salesforce stop leaking through risky settings and connected apps.
- Security awareness training and phishing simulation
People recognise and report attacks instead of falling for them.