AI Is Fighting Phishing Too: What Microsoft Teams' Smarter Scam Detection Means for Your Business

Some Good News About AI and Security

Lately a lot of security headlines about AI have been grim. So here's a nice change: AI is also making the tools your team uses every day better at catching scams.

Microsoft is building AI-powered phishing detection into Microsoft Teams so suspicious messages can be flagged right inside the conversation. If your office runs on Teams for quick questions, file sharing, and coordinating with clients and vendors, this matters to you.

In this post we'll cover:

• Why Teams chats have become a phishing target
• What Microsoft is adding, and what it builds on
• Why smarter tools work best alongside trained people
• How we help Northeast Ohio businesses get the most out of both

Why Chat Became the New Inbox for Scammers

For years, most phishing awareness focused on email. Email still matters, but work conversations have moved. For many small and mid-sized businesses, Teams is where things actually get done.

That's exactly why attackers showed up there too. A chat message feels different from an email:

• It feels internal. A message inside Teams seems like it came from a colleague, even when it didn't.
• It feels urgent. Chat is built for quick back-and-forth, so people reply fast and think less.
• It feels trusted. Plenty of people who'd never click a strange email link will open a file a "coworker" drops into a chat.

Microsoft's own threat intelligence teams have documented campaigns where attackers used external Teams chats to pose as IT support or help desk staff and get people to share credentials or allow remote access. The tactic works because it feels like ordinary office conversation.

What Microsoft Is Adding to Teams

Microsoft is extending its AI-driven threat detection into Teams conversations so messages that look like phishing can be identified and flagged for users. Basically, the same kind of intelligence that has protected Outlook inboxes for years is getting closer to where your team chats.

This isn't coming out of nowhere. It builds on protections Microsoft has been adding to Teams through Microsoft Defender for Office 365, which already include:

• Safe Links in Teams: URLs shared in Teams conversations can be checked when someone clicks them, which helps block known malicious sites (per Microsoft's Safe Links documentation).
• Zero-hour auto purge (ZAP) for Teams: If a message is found to be malicious after it was delivered, ZAP can pull it from the chat after the fact, according to Microsoft Learn.
• User reporting in Teams: Depending on configuration, users can report suspicious Teams messages so security teams can review them.
• External chat warnings: Teams can show notices when a message comes from someone outside your organization, which is a useful nudge to slow down.

The AI-powered detection adds another layer on top of these, aimed at spotting phishing patterns in the conversation itself instead of only checking links and files.

A Quick Word on Licensing and Timing

One thing we want to be upfront about: Microsoft features usually roll out in stages, and some security capabilities depend on your Microsoft 365 plan or add-on licenses (such as Defender for Office 365). What one tenant sees on a given day may differ from another.

We always recommend checking the Microsoft 365 Roadmap and your tenant's Message Center for current status, instead of assuming a feature is already active in your environment. If you're not sure which protections your plan includes, that's a quick conversation for us to have.

What This Could Look Like for Your Team

For an office manager or business owner, the practical effect is simple: Teams can raise its hand when something looks off.

Depending on how protections are set up, your staff might see:

• A warning on a message that looks suspicious
• A notice that a sender is external to your organization
• A link that gets blocked when clicked
• A message that disappears after it's identified as malicious

That's real progress. Each of those moments can stop a scam before it starts. It also takes a load off busy employees who shouldn't have to be security analysts to do their jobs.

Smarter Tools Catch More. People Still Make the Final Call.

This is the part we care about most. AI detection is a big step forward, but it doesn't replace good human judgment. It strengthens it.

Here's why the human in the loop still matters:

AI Works on Patterns, People Work on Context

An AI model can notice that a message has urgent language, an odd link, or an unusual sender. What it can't always know is that your operations manager never asks for passwords over chat, or that your vendor would never send files from a personal account. Your people know your business. That context is powerful.

No Filter Is Perfect in Either Direction

Every detection tool makes trade-offs. Sometimes a legitimate message gets flagged. Sometimes a well-crafted scam gets through. That's how any security control works, AI included. Industry research like the Verizon Data Breach Investigations Report has repeatedly found that the human element plays a role in a majority of breaches. That's exactly why people and tools need to work together.

Warnings Only Work If People Act on Them

A warning banner helps when someone reads it, pauses, and does the right thing. Training helps your team recognize what a warning means and what to do next.

Build a Culture Where Asking Is Encouraged

The best security cultures we see across Northeast Ohio share one trait: people feel completely comfortable saying, "This looks weird, can someone check?"

That culture doesn't happen by accident. Here's what helps:

• Make reporting easy. Make sure the report option in Teams (and Outlook) is turned on and that everyone knows where it is.
• Thank people who report. Even when it turns out to be nothing, a report is a win. Saying so out loud reinforces the habit.
• Remove the embarrassment. Nobody should feel silly for double-checking. A quick "good catch" from leadership goes a long way.
• Verify through a second channel. If a chat asks for something sensitive, confirm with a phone call or in person using contact info you already have, not info from the message.
• Treat warnings as a pause button. When Teams flags something, the right response is to stop and ask, not click past it.

Compare that with a workplace where people stay quiet because they're afraid of looking foolish or getting blamed. In that environment, even the best AI detection only gets you part of the way.

A Few Settings Worth Reviewing

If your business uses Teams, here are some areas we suggest reviewing with your IT partner:

• External access settings: Decide which outside organizations your team can chat with. Many businesses don't need open chat with everyone.
• Reporting configuration: Confirm user reporting is enabled and that reports go somewhere someone actually reviews them.
• Defender for Office 365 coverage: Check whether your licensing includes Safe Links, ZAP, and related Teams protections.
• Message Center updates: Keep an eye on Microsoft's announcements so new protections get turned on and configured on purpose, not by chance.

These aren't complicated, but they're easy to skip when everyone is busy running the business.

How We Pair Smarter Tools With Trained People

At Local Network Solutions, we see security as a system, not a single product. Smarter tools like AI phishing detection in Teams are one strong piece. Our Cybersecurity pillar connects that piece to the rest of the picture:

• Tools configured with intent. We help make sure the protections available to you are turned on, tuned, and understood.
• Staff who know what to do. We help teams recognize warnings, report suspicious messages, and build the "ask first" habit.
• 24/7 anomaly detection and monitoring. When something gets past the first line, our proactive monitoring is watching for unusual activity around the clock.
• Rapid incident response. If someone does click, speed matters. We respond quickly to contain the issue before it turns into a data compromise.

And because we cover all six IT pillars under one unified team and one SLA (WAN connectivity, cybersecurity, network infrastructure, IT infrastructure, UPS backup, and backup and disaster recovery), there's no finger-pointing between vendors when something needs attention. If a phishing attempt ever becomes something bigger, the same team that monitors your security also manages your verified backups and tested recovery playbooks.

That's what we mean by Zero Gaps. Zero Excuses.

Why This Matters for Northeast Ohio Businesses

We've been serving businesses in Cleveland, Akron, Canton, Youngstown, and across Northeast Ohio for more than 10 years, and we've helped protect 500+ businesses in manufacturing, healthcare, higher education, professional services, and financial services. One thing we've learned: technology gets better every year, and so do the people who use it well.

The arrival of AI-powered phishing detection in Teams is a good reason to feel optimistic. Your everyday tools are getting smarter. Pair them with a team that feels confident asking questions and a partner watching around the clock, and you're in a strong position.

Ready to Get More From the Tools You Already Have?

If you'd like help reviewing your Teams security settings, confirming which Microsoft protections your plan includes, or building a reporting culture your team actually uses, we'd love to talk.

Schedule Your Consultation with our local team today. Email us at [email protected] or call (216) 658-6988. We'll help you pair smarter tools with trained people so your business stays protected, productive, and ready for whatever comes next.