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Protect your organization with layered controls, not an AI detector or a checklist for spotting bad grammar. Prioritize phishing-resistant sign-in for high-impact accounts, harden email, verify consequential requests through a separate trusted channel, and rehearse how to contain a compromise. Generative AI can help criminals make social engineering more polished, scalable, and multimodal; it does not change the need for these core defenses.
How does AI change phishing—and what does it not change?
Generative AI can help criminals write convincing messages, correct language errors, translate text, and create fraudulent profiles or websites. It can also produce synthetic images, audio, and video for impersonation and fraud. That makes polish a weak test of legitimacy: a well-written message, familiar tone, logo, or apparently familiar voice does not prove who sent it. The FBI described these uses in its December 3, 2024 IC3 announcement.
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This does not mean every polished message is AI-generated, that every phishing campaign uses AI, or that phishing has become impossible to detect. AI can make social engineering more persuasive and easier to scale, but the organizational risk still depends on identity protections, email and endpoint controls, staff verification habits, and the ability to respond quickly.
One example is U.S.-specific and time-bounded: in a May 15, 2025 alert, the FBI described a campaign observed since April 2025 in which actors impersonated senior U.S. officials using text messages and AI-generated voice messages. The reported sequence included rapport-building and links intended to move targets to another messaging platform, with account access and further impersonation among the possible outcomes. It is a documented campaign, not evidence that every organization is being targeted in the same way.
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How do I protect my organization from AI-generated phishing?
Work through these defenses in order of impact and readiness. Start with accounts whose compromise could expose many systems or enable financial loss, then extend controls across the organization. The FBI’s Operation Winter SHIELD guidance covers organizational resilience measures including authentication, email, logging, and incident preparation.
- Reduce the chance of account takeover. Prioritize administrators, executives, finance staff, remote access, and critical systems for phishing-resistant sign-in. Plan enrollment, recovery, and lost-authenticator procedures before enforcing the change.
- Harden the email path. Configure sender authentication for every domain that sends mail on your behalf, including legitimate third-party services. Add attachment, macro, link, and external-forwarding protections.
- Require independent verification. Set a clear rule for confirming urgent requests involving money, credentials, sensitive data, or payment-detail changes using a previously trusted channel.
- Make reporting and response routine. Give employees a simple reporting route, centralize relevant logs, and rehearse how to contain accounts, investigate delivery, and preserve evidence.
These layers reduce opportunities for an attacker to turn a persuasive message into access or loss; none guarantees that every malicious message will be blocked.
What is the best MFA to stop phishing?
Prefer phishing-resistant methods such as FIDO2 security keys or supported device-bound passkeys, especially for privileged and high-impact accounts. These methods are designed to resist credential capture on an impostor site. Compatibility depends on your identity provider, accounts, and devices, so confirm support before choosing an approach. A FIDO2-compliant physical security key is one option; supported passkeys may be another.
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- FAST & CONVENIENT LOGIN: Plug in your YubiKey 5C NFC via USB and tap it, or tap it against your phone (NFC), to authenticate. No batteries, no internet connection, and no extra fees required
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Not all MFA offers the same resistance. Microsoft’s guidance says SMS codes, email one-time passcodes, and push notifications can be intercepted, spoofed, or abused through fatigue attacks. Where authenticator apps remain in use, FBI guidance recommends number matching and domain display rather than push-only approval. Microsoft describes phishing-resistant MFA as its new baseline in its Secure Future Initiative guidance, last updated August 5, 2025; that is Microsoft’s guidance, not a universally binding regulation.
| Method | Phishing resistance | Planning considerations |
|---|---|---|
| FIDO2 security key | Phishing-resistant when supported and correctly configured | Requires key provisioning, compatibility checks, secure enrollment, and a lost-key recovery process. |
| Supported device-bound passkey | Phishing-resistant when supported by the identity provider, account, and device | Check platform support and define enrollment, replacement, and recovery workflows. |
| Authenticator app | Not equivalent to phishing-resistant MFA | If retained, use number matching and domain display where available; avoid push-only approval. |
| SMS or email one-time code | Not phishing-resistant | Plan migration away from these methods for high-impact access. |
Roll out stronger methods in stages rather than treating MFA as a single switch. Microsoft documents a phased implementation involving phishing-resistant methods, conditional access, secure onboarding, time-bound Temporary Access Pass credentials for onboarding or recovery, and lifecycle workflows. A staged approach lets teams address platform differences, hardware provisioning, adoption, and recovery before expanding enforcement. Microsoft reports that 92% of its employee productivity accounts were protected by phishing-resistant authentication methods in the implementation described on that page. That is a Microsoft-specific deployment result, not an industry benchmark or a forecast for another organization.
How should we harden email against convincing messages?
For each sending domain, publish SPF and DKIM and configure DMARC. Inventory legitimate third-party senders, align them with your domain policy, and move DMARC from monitoring toward quarantine and reject as configuration and alignment mature. This helps reduce domain spoofing, but it cannot authenticate every message that uses a lookalike domain or a compromised legitimate account.
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Pair domain controls with measures that inspect or constrain what email can do:
- Quarantine high-risk attachments and sandbox suspicious files.
- Block macros in files sourced from the internet.
- Protect links at click time, not only when a message first arrives.
- Restrict automatic forwarding to external addresses.
These measures follow FBI resilience guidance; no one control should be treated as a complete filter for malicious mail.
How can employees verify an urgent request from an executive?
Require a separate, trusted route for requests involving money, credentials, sensitive data, or payment-instruction changes. Employees should use a number from the company directory, a previously confirmed phone number, or an established vendor contact—not a phone number, URL, or reply path supplied by the suspicious message. The FBI’s 2025 alert on impersonation recommends independent confirmation.
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- FAST & CONVENIENT LOGIN: Plug in your Security Key NFC via USB-A and tap it, or tap it against your phone (NFC) to authenticate. No batteries, no internet connection, and no extra fees required.
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- Call the requester using a number already on file, or confirm in person or through an established internal channel.
- For a vendor or payment change, verify with the existing vendor contact and follow the organization’s approval workflow.
- Never disclose an MFA code in response to an email, text, or call.
- Report the request through the organization’s designated route, even if it turns out to be legitimate.
Make the procedure easy to follow under pressure: define who can approve high-consequence actions, provide a simple reporting path, and tell staff that a familiar name, writing style, logo, or voice is not identity verification. Training should reinforce pausing, reporting, and independent confirmation; the cited guidance does not establish a universal training frequency or a guaranteed effectiveness percentage.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Can you tell whether a phishing email was written by AI?
Usually, not reliably from the wording or appearance alone. AI can improve grammar and produce credible language, while a human can write an awkward message. Synthetic media can also be difficult to identify. The FBI’s 2024 guidance supports treating familiar warning signs such as spelling errors as less dependable—not assuming that every polished message was generated by AI.
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What should we do if an employee clicks a phishing link?
Follow the incident response plan promptly. A click alone does not establish whether credentials were entered, malware ran, or an account was accessed, so investigate the actual activity rather than assuming either that the organization is compromised or that nothing happened.
- Report and preserve. Ask the employee to report the message through the approved route. Preserve the original message and relevant evidence, including timestamps and the link or attachment, according to your procedures.
- Contain likely exposure. Involve the incident response lead. If credentials may have been entered or a session may be compromised, contain the affected account and sessions, then reset credentials and re-enroll authentication as appropriate to the environment.
- Review identity and mailbox activity. Check authentication events, mailbox access, newly created rules, forwarding settings, and other changes that could maintain access or hide activity.
- Check for wider impact. Review endpoint, email, network, DNS, remote-access, and cloud audit records for related activity and possible lateral movement. Expand containment if evidence warrants it.
- Coordinate recovery and notifications. Work with security, IT, operations, legal, communications, and relevant service providers; involve law enforcement when appropriate. Preserve evidence and make notifications according to applicable obligations and your response plan.
Centralize authentication, email, endpoint, network, DNS, remote-access, and cloud audit logs. Protect exported logs against alteration and retain them according to legal and incident-response needs. Keep a concise playbook that names decision-makers, isolation steps, communications roles, and evidence-preservation procedures. The FBI recommends a focused 60-minute tabletop exercise quarterly and including law-enforcement contacts in the plan; adapt that guidance to your organization and jurisdiction.
How should we prioritize the rollout?
Use account impact and operational readiness to sequence work. A staged rollout concentrates early effort where compromise would be most consequential while giving IT time to validate compatibility, recovery, and support processes.
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One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware match- First: inventory administrators, executives, finance users, remote access, and critical systems; enable phishing-resistant authentication for these groups where supported.
- Next: inventory sending domains and third-party mail services, publish and align SPF, DKIM, and DMARC, then strengthen policy as legitimate mail is validated.
- Then: deploy attachment, macro, link, and forwarding controls, and make suspicious-message reporting straightforward.
- Ongoing: centralize logs, review incidents and near misses, and exercise containment and recovery with technical and business stakeholders.
The official sources cited here provide practical controls but do not establish an AI-phishing-specific organizational loss rate, detection rate, or independently comparable percentage of risk reduction. Choose identity and email services based on your existing platforms, device estate, regulatory needs, and recovery requirements rather than assuming one vendor or product fits every organization.
The FBI materials cited here are U.S. federal guidance and describe a U.S.-specific campaign; they are not a statement of legal duties in every country. Organizations should follow applicable local reporting, privacy, and incident-handling requirements.
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