For years, small businesses have been told to use stronger passwords and turn on multi-factor authentication. That advice still matters. But attackers are getting better at tricking employees into approving sign-ins, entering codes, or giving access to fake login requests.
That is why passkeys are getting more attention.
A passkey is a safer sign-in method that uses something like a fingerprint, face scan, device PIN, or security key instead of relying on a password alone. Microsoft describes passkeys as phishing-resistant because they are designed to work only with the real service they were created for, not a fake sign-in page.
For a small business using Microsoft 365, this is worth paying attention to.
Most small businesses run on email. If an attacker gets into one Microsoft 365 account, they may be able to read messages, send fake invoices, reset passwords, access files, or impersonate a manager.
That can quickly turn into:
The FBI has also warned about phishing tools that target Microsoft 365 access tokens, which can let criminals get into accounts without simply stealing a normal password. That does not mean every business needs to panic, but it does mean password-only thinking is no longer enough.
A password can be typed into the wrong website. A one-time code can be tricked out of an employee. A passkey is different because it is tied to the correct service and usually to a trusted device or security key.
In plain English, passkeys help answer two questions more safely:
That combination makes passkeys useful for reducing common phishing risk, especially for owners, managers, finance staff, and anyone with access to sensitive files or payments.
Passkeys are helpful, but they should be planned. A rushed rollout can confuse employees or lock people out if recovery steps are not ready.
Start with these practical steps:
Passkeys are not magic, and they do not replace every other security control. Businesses still need strong account policies, device protection, email filtering, backups, and monitoring.
But for many Microsoft 365 environments, passkeys are becoming a practical next step toward reducing account takeover risk.
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