Can Abnormal really replace my SEG?

Yes. ~75% of Abnormal customers operate without a third-party SEG, running Abnormal plus native Microsoft or Google security. 44+ published customer displacement stories — including Choice Hotels, Sony, and a Fortune 500 transportation leader — document the migration. The full spectrum — spam, malware, phishing, BEC, vendor compromise, account takeover — is handled in one API-based platform.

How long does the migration take?

Deployment of Abnormal itself takes 60 seconds via API. Running in parallel with your existing SEG is the recommended evaluation pattern. Full SEG decommission typically completes within 30 days once you've verified the parallel-run data.

What about commodity spam and malware?

Native security in M365 and Google Workspace catches commodity volume well. Abnormal layers behavioral detection on top to catch the sophisticated attacks both native and SEG-based tools miss. Together they cover the full threat surface without the SEG in the middle.

Is there deployment risk?

No MX changes, no mail-flow rerouting, no transport rules to modify. Abnormal reads via API — if it's ever unavailable, mail flow continues uninterrupted. The deployment risk profile is closer to a SaaS analytics tool than a mail-flow component.

Displace Your SEG

The Last Generation of Email Security

~75% of Abnormal customers run with no third-party SEG. Behavioral AI replaces gateway scanning entirely — deploys via API in 60 seconds, costs a fraction of what our competitors charge.

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~0%

Of customers run without a third-party SEG

Abnormal Platform Data

Published customer displacement stories from legacy SEGs

Abnormal Customer Stories

ROI over three years vs. legacy stack

Forrester Total Economic Impact

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The Challenge

Why the SEG Era Is Ending

MX Rerouting Is a Months-Long Deployment

Standing up a SEG takes weeks of MX changes, policy tuning, and mail-flow testing — every change risks delivery outages.

Signature Engines Can't See Zero-Payload BEC

A SEG's core competency is scanning attachments and URLs — modern BEC ships neither.

Policy Tuning Is a Permanent SOC Cost

Rule maintenance, allow-list management, and false positive triage consume analyst hours every week.

Layered SEG + API Solutions Double the Cost

Running both a SEG and a post-delivery API tool means paying twice for overlapping coverage.

Native Security Alone Leaves Visibility Gaps

M365 and Google Workspace alone don't cover BEC, vendor compromise, or cross-account behavioral correlation.

Real Incident

ChoiceChoiceHotelsHotelsranrantwotwoSEGsSEGsininsequencesequenceandandwaswasstillstillmissingmissingthetheBECBECattacksattackscostingcostingthemthemmoneymoney——theytheyreplacedreplacedbothbothwithwithAbnormalAbnormalandandstoppedstoppedpayingpayingtwicetwiceforforpartialpartialcoverage.coverage.

Based on a real customer incident

The Solution

How Abnormal Replaces Your SEG

Replaces the entire SEG with one behavioral engine — spam, malware, phishing, BEC, vendor fraud, and account takeover handled without signature lists to maintain.
Layers on top of native Microsoft or Google security via API in minutes — no MX changes, no mail rerouting, no maintenance windows.
Runs alongside your existing SEG so you can compare real detection data before decommissioning with confidence.

主な機能

Built for Modern Email Attacks

Full Threat Coverage in One Platform

Spam, malware, phishing, BEC, vendor compromise, and account takeover handled by one behavioral engine — no signature lists to maintain.

Native + Abnormal, No SEG Required

The configuration ~75% of customers run: M365 or Google native security plus Abnormal — full coverage, half the cost of the SEG-supplement stack.

Personalized Inbox, Without Policies

Graymail and unwanted-mail handling that learns per user — the inbox-quality work your SEG charged extra for, included.

プラットフォーム概要を見る

Fortune 500企業の25%以上が、Abnormal AIの自動化されたセキュリティ判断を信頼して採用しています

Customer Voice

Real Results from SEG Migrations

“Abnormal's automation gives our analysts time back to work on other projects, and the fact that it's API-based gives us flexibility to tie in other applications and their data.”

John Roeser

Senior Manager, Information Security, Domino's

“Our goals are to get away from being so reliant on human judgment and leverage AI to be proactive. Abnormal helps us with those goals.”

Corey Kaemming

Senior Director, Information Security, Valvoline

AbnormalはFortune 500の25%以上を含む4,500社以上のお客様にご利用いただいています。

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FAQ

Related Resources

Webinars

The Detection Gap: Why AI-Powered Attacks Are Winning Against Legacy Email Security

Watch this on-demand webinar to learn how AI-powered BEC attacks bypass secure email gateways, and how behavioral AI can detect what legacy tools miss.

White Papers

The Essential Guide to Human Risk Management

Learn why traditional security awareness training fails to reduce real-world risk and how modern human risk management helps organizations measure and reduce risky behavior over time.

Data Sheets

Displace Your Secure Email Gateway

Stop sophisticated email attacks that target your employees using native cloud-based email security plus Abnormal.

View All Resources

Stop Paying Twice for Partial Coverage

Deploy in 60 seconds via API. No MX changes. Run alongside your SEG for evaluation — then decommission.