09/05/2026
Attackers Can Gain Access Without Stealing Your Password — And MFA May Not Stop Them
The FBI issued a new cybersecurity warning this week about a growing technique called OAuth Consent Phishing.
This attack is important for every business using cloud services such as Microsoft 365 or Google Workspace.
Doing a another post on this to break down how this works in plain terms.
Here’s what makes it different:
An attacker sends a convincing email, text, or message containing a link to what appears to be a legitimate application or service.
The victim may even be taken to a real Microsoft or Google login page.
They successfully authenticate.
MFA works.
But then comes the dangerous part:
“Allow this application to access your account?”
If the user clicks Allow, they may unknowingly authorize a malicious application to access their email, files, and other company data.
The attacker doesn’t necessarily need the user’s password.
They don’t necessarily need to defeat MFA.
Instead, the user has authorized the attacker’s application.
Even worse, simply changing the user’s password may not remove the attacker’s access because the malicious application can retain an authorization token. The application and its permissions must be identified and revoked.
This is why cybersecurity can no longer rely on:
❌ Strong passwords alone
❌ MFA alone
❌ Antivirus alone
❌ Employee awareness alone
Businesses need layers of protection that include identity monitoring, application controls, OAuth permission management, conditional access, endpoint security, and continuous monitoring.
One of the most important lessons from this FBI warning:
A successful login does not necessarily mean a secure login.
Cybersecurity has moved beyond protecting passwords. Businesses must now protect identities, applications, devices, permissions, and access tokens.
Source: FBI Internet Crime Complaint Center (IC3), September 1, 2026.
Read more:
https://www.ic3.gov/PSA/2026/PSA260901?