diff --git a/app/controllers/idv/gpo_verify_controller.rb b/app/controllers/idv/gpo_verify_controller.rb
index 2da6832d51b..6501f53b1fe 100644
--- a/app/controllers/idv/gpo_verify_controller.rb
+++ b/app/controllers/idv/gpo_verify_controller.rb
@@ -2,6 +2,7 @@ module Idv
   class GpoVerifyController < ApplicationController
     include IdvSession
     include StepIndicatorConcern
+    include ThreatmetrixReviewConcern
 
     before_action :confirm_two_factor_authenticated
     before_action :confirm_verification_needed
@@ -43,14 +44,19 @@ def create
             redirect_to idv_in_person_ready_to_verify_url
           else
             event, disavowal_token = create_user_event_with_disavowal(:account_verified)
-            UserAlerts::AlertUserAboutAccountVerified.call(
-              user: current_user,
-              date_time: event.created_at,
-              sp_name: decorated_session.sp_name,
-              disavowal_token: disavowal_token,
-            )
-            flash[:success] = t('account.index.verification.success')
-            redirect_to sign_up_completed_url
+
+            if result.extra[:threatmetrix_check_failed] && threatmetrix_enabled?
+              redirect_to_threatmetrix_review
+            else
+              UserAlerts::AlertUserAboutAccountVerified.call(
+                user: current_user,
+                date_time: event.created_at,
+                sp_name: decorated_session.sp_name,
+                disavowal_token: disavowal_token,
+              )
+              flash[:success] = t('account.index.verification.success')
+              redirect_to sign_up_completed_url
+            end
           end
         else
           flash[:error] = @gpo_verify_form.errors.first.message
@@ -93,5 +99,9 @@ def confirm_verification_needed
       return if current_user.decorate.pending_profile_requires_verification?
       redirect_to account_url
     end
+
+    def threatmetrix_enabled?
+      IdentityConfig.store.proofing_device_profiling_decisioning_enabled
+    end
   end
 end
diff --git a/app/forms/gpo_verify_form.rb b/app/forms/gpo_verify_form.rb
index 44a48b0569e..70174a73e47 100644
--- a/app/forms/gpo_verify_form.rb
+++ b/app/forms/gpo_verify_form.rb
@@ -21,6 +21,8 @@ def submit
       if pending_in_person_enrollment?
         UspsInPersonProofing::EnrollmentHelper.schedule_in_person_enrollment(user, pii)
         pending_profile&.deactivate(:in_person_verification_pending)
+      elsif threatmetrix_check_failed?
+        pending_profile&.deactivate(:threatmetrix_review_pending)
       else
         activate_profile
       end
@@ -34,6 +36,7 @@ def submit
         enqueued_at: gpo_confirmation_code&.code_sent_at,
         pii_like_keypaths: [[:errors, :otp], [:error_details, :otp]],
         pending_in_person_enrollment: pending_in_person_enrollment?,
+        threatmetrix_check_failed: threatmetrix_check_failed?,
       },
     )
   end
@@ -77,6 +80,11 @@ def pending_in_person_enrollment?
     pending_profile&.proofing_components&.[]('document_check') == Idp::Constants::Vendors::USPS
   end
 
+  def threatmetrix_check_failed?
+    status = pending_profile&.proofing_components&.[]('threatmetrix_review_status')
+    !status.nil? && status != 'pass'
+  end
+
   def activate_profile
     user.pending_profile&.activate
   end
diff --git a/spec/controllers/idv/gpo_verify_controller_spec.rb b/spec/controllers/idv/gpo_verify_controller_spec.rb
index 14a9e3b1390..9708a97b116 100644
--- a/spec/controllers/idv/gpo_verify_controller_spec.rb
+++ b/spec/controllers/idv/gpo_verify_controller_spec.rb
@@ -15,6 +15,7 @@
   end
   let(:proofing_components) { nil }
   let(:user) { create(:user) }
+  let(:threatmetrix_enabled) { false }
 
   before do
     stub_analytics
@@ -28,6 +29,13 @@
     )
     allow(decorated_user).to receive(:pending_profile_requires_verification?).
       and_return(has_pending_profile)
+
+    allow(IdentityConfig.store).to receive(:lexisnexis_threatmetrix_enabled).
+      and_return(threatmetrix_enabled)
+    allow(IdentityConfig.store).to receive(:lexisnexis_threatmetrix_required_to_verify).
+      and_return(threatmetrix_enabled)
+    allow(IdentityConfig.store).to receive(:proofing_device_profiling_decisioning_enabled).
+      and_return(threatmetrix_enabled)
   end
 
   describe '#index' do
@@ -109,6 +117,7 @@
           success: true,
           errors: {},
           pending_in_person_enrollment: false,
+          threatmetrix_check_failed: false,
           enqueued_at: user.pending_profile.gpo_confirmation_codes.last.code_sent_at,
           pii_like_keypaths: [[:errors, :otp], [:error_details, :otp]],
         )
@@ -146,6 +155,7 @@
             success: true,
             errors: {},
             pending_in_person_enrollment: true,
+            threatmetrix_check_failed: false,
             enqueued_at: user.pending_profile.gpo_confirmation_codes.last.code_sent_at,
             pii_like_keypaths: [[:errors, :otp], [:error_details, :otp]],
           )
@@ -163,6 +173,101 @@
           action
         end
       end
+
+      context 'threatmetrix disabled' do
+        context 'with threatmetrix status of "reject"' do
+          let(:proofing_components) do
+            ProofingComponent.create(
+              user: user, threatmetrix: true,
+              threatmetrix_review_status: 'reject'
+            )
+          end
+
+          it 'redirects to the sign_up/completions page' do
+            expect(@analytics).to receive(:track_event).with(
+              'IdV: GPO verification submitted',
+              success: true,
+              errors: {},
+              pending_in_person_enrollment: false,
+              threatmetrix_check_failed: true,
+              enqueued_at: user.pending_profile.gpo_confirmation_codes.last.code_sent_at,
+              pii_like_keypaths: [[:errors, :otp], [:error_details, :otp]],
+            )
+            expect(@irs_attempts_api_tracker).to receive(:idv_gpo_verification_submitted).
+              with(success_properties)
+
+            action
+
+            disavowal_event_count = user.events.where(event_type: :account_verified, ip: '0.0.0.0').
+              where.not(disavowal_token_fingerprint: nil).count
+            expect(disavowal_event_count).to eq 1
+            expect(response).to redirect_to(sign_up_completed_url)
+          end
+        end
+      end
+
+      context 'threatmetrix enabled' do
+        let(:threatmetrix_enabled) { true }
+
+        context 'with threatmetrix status of "reject"' do
+          let(:proofing_components) do
+            ProofingComponent.create(
+              user: user, threatmetrix: true,
+              threatmetrix_review_status: 'reject'
+            )
+          end
+
+          it 'redirects to the sad face screen' do
+            expect(@analytics).to receive(:track_event).with(
+              'IdV: GPO verification submitted',
+              success: true,
+              errors: {},
+              pending_in_person_enrollment: false,
+              threatmetrix_check_failed: true,
+              enqueued_at: user.pending_profile.gpo_confirmation_codes.last.code_sent_at,
+              pii_like_keypaths: [[:errors, :otp], [:error_details, :otp]],
+            )
+
+            action
+
+            expect(response).to redirect_to(idv_setup_errors_url)
+          end
+
+          it 'does not show a flash message' do
+            expect(flash[:success]).to be_nil
+            action
+          end
+
+          it 'does not dispatch account verified alert' do
+            expect(UserAlerts::AlertUserAboutAccountVerified).not_to receive(:call)
+            action
+          end
+        end
+
+        context 'with threatmetrix status of "review"' do
+          let(:proofing_components) do
+            ProofingComponent.create(
+              user: user, threatmetrix: true,
+              threatmetrix_review_status: 'review'
+            )
+          end
+          it 'redirects to the sad face screen' do
+            expect(@analytics).to receive(:track_event).with(
+              'IdV: GPO verification submitted',
+              success: true,
+              errors: {},
+              pending_in_person_enrollment: false,
+              threatmetrix_check_failed: true,
+              enqueued_at: user.pending_profile.gpo_confirmation_codes.last.code_sent_at,
+              pii_like_keypaths: [[:errors, :otp], [:error_details, :otp]],
+            )
+
+            action
+
+            expect(response).to redirect_to(idv_setup_errors_url)
+          end
+        end
+      end
     end
 
     context 'with an invalid form' do
@@ -174,6 +279,7 @@
           success: false,
           errors: otp_code_error_message,
           pending_in_person_enrollment: false,
+          threatmetrix_check_failed: false,
           enqueued_at: nil,
           error_details: otp_code_incorrect,
           pii_like_keypaths: [[:errors, :otp], [:error_details, :otp]],
@@ -204,6 +310,7 @@
           success: false,
           errors: otp_code_error_message,
           pending_in_person_enrollment: false,
+          threatmetrix_check_failed: false,
           enqueued_at: nil,
           error_details: otp_code_incorrect,
           pii_like_keypaths: [[:errors, :otp], [:error_details, :otp]],
diff --git a/spec/features/idv/steps/gpo_otp_verification_step_spec.rb b/spec/features/idv/steps/gpo_otp_verification_step_spec.rb
index c9f754b46dd..68b612a6ef8 100644
--- a/spec/features/idv/steps/gpo_otp_verification_step_spec.rb
+++ b/spec/features/idv/steps/gpo_otp_verification_step_spec.rb
@@ -9,6 +9,10 @@
       :profile,
       deactivation_reason: :gpo_verification_pending,
       pii: { ssn: '123-45-6789', dob: '1970-01-01' },
+      proofing_components: {
+        threatmetrix: threatmetrix_enabled,
+        threatmetrix_review_status: threatmetrix_review_status,
+      },
     )
   end
   let(:gpo_confirmation_code) do
@@ -19,59 +23,51 @@
     )
   end
   let(:user) { profile.user }
-
-  it 'prompts for one-time code at sign in' do
-    sign_in_live_with_2fa(user)
-
-    expect(current_path).to eq idv_gpo_verify_path
-    expect(page).to have_content t('idv.messages.gpo.resend')
-
-    gpo_confirmation_code
-    fill_in t('forms.verify_profile.name'), with: otp
-    click_button t('forms.verify_profile.submit')
-
-    expect(user.events.account_verified.size).to eq 1
-    expect(page).to_not have_content(t('account.index.verification.reactivate_button'))
-  end
-
-  it 'renders an error for an expired GPO OTP' do
-    sign_in_live_with_2fa(user)
-
-    gpo_confirmation_code.update(code_sent_at: 11.days.ago)
-    fill_in t('forms.verify_profile.name'), with: otp
-    click_button t('forms.verify_profile.submit')
-
-    expect(current_path).to eq idv_gpo_verify_path
-    expect(page).to have_content t('errors.messages.gpo_otp_expired')
-
-    user.reload
-
-    expect(user.events.account_verified.size).to eq 0
-    expect(user.active_profile).to be_nil
+  let(:threatmetrix_enabled) { false }
+  let(:threatmetrix_review_status) { nil }
+  let(:redirect_after_verification) { nil }
+  let(:profile_should_be_active) { true }
+  let(:expected_deactivation_reason) { nil }
+
+  before do
+    allow(IdentityConfig.store).to receive(:lexisnexis_threatmetrix_enabled).
+      and_return(threatmetrix_enabled)
+    allow(IdentityConfig.store).to receive(:lexisnexis_threatmetrix_required_to_verify).
+      and_return(threatmetrix_enabled)
+    allow(IdentityConfig.store).to receive(:proofing_device_profiling_decisioning_enabled).
+      and_return(threatmetrix_enabled)
   end
 
-  it 'allows a user to resend a letter' do
-    allow(Base32::Crockford).to receive(:encode).and_return(otp)
-
-    sign_in_live_with_2fa(user)
-
-    expect(GpoConfirmation.count).to eq(0)
-    expect(GpoConfirmationCode.count).to eq(0)
-    click_on t('idv.messages.gpo.resend')
+  it_behaves_like 'gpo otp verification'
 
-    expect_step_indicator_current_step(t('step_indicator.flows.idv.get_a_letter'))
+  context 'ThreatMetrix enabled' do
+    let(:threatmetrix_enabled) { true }
 
-    click_on t('idv.buttons.mail.resend')
+    context 'ThreatMetrix says "pass"' do
+      let(:threatmetrix_review_status) { 'pass' }
+      it_behaves_like 'gpo otp verification'
+    end
 
-    expect(GpoConfirmation.count).to eq(1)
-    expect(GpoConfirmationCode.count).to eq(1)
-    expect(current_path).to eq idv_come_back_later_path
+    context 'ThreatMetrix says "review"' do
+      let(:threatmetrix_review_status) { 'review' }
+      let(:redirect_after_verification) { idv_setup_errors_path }
+      let(:profile_should_be_active) { false }
+      let(:expected_deactivation_reason) { 'threatmetrix_review_pending' }
+      it_behaves_like 'gpo otp verification'
+    end
 
-    confirmation_code = GpoConfirmationCode.first
-    otp_fingerprint = Pii::Fingerprinter.fingerprint(otp)
+    context 'ThreatMetrix says "reject"' do
+      let(:threatmetrix_review_status) { 'reject' }
+      let(:redirect_after_verification) { idv_setup_errors_path }
+      let(:profile_should_be_active) { false }
+      let(:expected_deactivation_reason) { 'threatmetrix_review_pending' }
+      it_behaves_like 'gpo otp verification'
+    end
 
-    expect(confirmation_code.otp_fingerprint).to eq(otp_fingerprint)
-    expect(confirmation_code.profile).to eq(profile)
+    context 'No ThreatMetrix result on proofing component' do
+      let(:threatmetrix_review_status) { nil }
+      it_behaves_like 'gpo otp verification'
+    end
   end
 
   context 'with gpo feature disabled' do
diff --git a/spec/forms/gpo_verify_form_spec.rb b/spec/forms/gpo_verify_form_spec.rb
index 3a0835e5794..e8402e1aa8b 100644
--- a/spec/forms/gpo_verify_form_spec.rb
+++ b/spec/forms/gpo_verify_form_spec.rb
@@ -147,6 +147,36 @@
           expect(enrollment.enrollment_code).to be_a(String)
         end
       end
+
+      context 'ThreatMetrix rejection' do
+        let(:proofing_components) do
+          ProofingComponent.create(
+            user: user, threatmetrix: true,
+            threatmetrix_review_status: threatmetrix_review_status
+          )
+        end
+
+        let(:threatmetrix_review_status) { 'reject' }
+
+        before do
+          allow(IdentityConfig.store).to receive(:lexisnexis_threatmetrix_enabled).
+            and_return(true)
+          allow(IdentityConfig.store).to receive(:lexisnexis_threatmetrix_required_to_verify).
+            and_return(true)
+          allow(IdentityConfig.store).to receive(:proofing_device_profiling_decisioning_enabled).
+            and_return(true)
+        end
+
+        it 'returns true' do
+          result = subject.submit
+          expect(result.success?).to eq true
+        end
+
+        it 'notes that threatmetrix failed' do
+          result = subject.submit
+          expect(result.extra).to include(threatmetrix_check_failed: true)
+        end
+      end
     end
 
     context 'incorrect OTP' do
diff --git a/spec/support/idv_examples/gpo_otp_verification.rb b/spec/support/idv_examples/gpo_otp_verification.rb
new file mode 100644
index 00000000000..ed41f67b242
--- /dev/null
+++ b/spec/support/idv_examples/gpo_otp_verification.rb
@@ -0,0 +1,71 @@
+shared_examples 'gpo otp verification' do
+  include IdvStepHelper
+
+  it 'prompts for one-time code at sign in' do
+    sign_in_live_with_2fa(user)
+
+    expect(current_path).to eq idv_gpo_verify_path
+    expect(page).to have_content t('idv.messages.gpo.resend')
+
+    gpo_confirmation_code
+    fill_in t('forms.verify_profile.name'), with: otp
+    click_button t('forms.verify_profile.submit')
+
+    expect(page).to have_current_path(redirect_after_verification) if redirect_after_verification
+
+    profile.reload
+
+    if profile_should_be_active
+      expect(profile.active).to be(true)
+      expect(profile.deactivation_reason).to be(nil)
+    else
+      expect(profile.active).to be(false)
+      if expected_deactivation_reason
+        expect(profile.deactivation_reason).to eq(expected_deactivation_reason)
+      end
+    end
+
+    expect(user.events.account_verified.size).to eq 1
+    expect(page).to_not have_content(t('account.index.verification.reactivate_button'))
+  end
+
+  it 'renders an error for an expired GPO OTP' do
+    sign_in_live_with_2fa(user)
+
+    gpo_confirmation_code.update(code_sent_at: 11.days.ago)
+    fill_in t('forms.verify_profile.name'), with: otp
+    click_button t('forms.verify_profile.submit')
+
+    expect(current_path).to eq idv_gpo_verify_path
+    expect(page).to have_content t('errors.messages.gpo_otp_expired')
+
+    user.reload
+
+    expect(user.events.account_verified.size).to eq 0
+    expect(user.active_profile).to be_nil
+  end
+
+  it 'allows a user to resend a letter' do
+    allow(Base32::Crockford).to receive(:encode).and_return(otp)
+
+    sign_in_live_with_2fa(user)
+
+    expect(GpoConfirmation.count).to eq(0)
+    expect(GpoConfirmationCode.count).to eq(0)
+    click_on t('idv.messages.gpo.resend')
+
+    expect_step_indicator_current_step(t('step_indicator.flows.idv.get_a_letter'))
+
+    click_on t('idv.buttons.mail.resend')
+
+    expect(GpoConfirmation.count).to eq(1)
+    expect(GpoConfirmationCode.count).to eq(1)
+    expect(current_path).to eq idv_come_back_later_path
+
+    confirmation_code = GpoConfirmationCode.first
+    otp_fingerprint = Pii::Fingerprinter.fingerprint(otp)
+
+    expect(confirmation_code.otp_fingerprint).to eq(otp_fingerprint)
+    expect(confirmation_code.profile).to eq(profile)
+  end
+end