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ToddyCat’s New Hacking Tools Steal Outlook Emails and Microsoft 365 Access Tokens

The Hacker News
Actively Exploited

Summary

ToddyCat, a threat actor, has developed a new tool called TCSectorCopy to steal Outlook emails and Microsoft 365 access tokens by exploiting the OAuth 2.0 authorization protocol through users' browsers. This poses a significant threat to corporate email security, as it allows unauthorized access to sensitive information outside the compromised infrastructure.

Original Article Summary

The threat actor known as ToddyCat has been observed adopting new methods to obtain access to corporate email data belonging to target companies, including using a custom tool dubbed TCSectorCopy. "This attack allows them to obtain tokens for the OAuth 2.0 authorization protocol using the user's browser, which can be used outside the perimeter of the compromised infrastructure to access

Impact

Outlook, Microsoft 365

In the Wild

Yes

Timeline

Newly disclosed

Remediation

Implement strong authentication measures, educate users about phishing attacks, and monitor for unauthorized access to corporate email accounts.

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