diff --git a/frontend/src/components/BruteForceView.tsx b/frontend/src/components/BruteForceView.tsx
index fede15e..661a761 100644
--- a/frontend/src/components/BruteForceView.tsx
+++ b/frontend/src/components/BruteForceView.tsx
@@ -388,7 +388,7 @@ export function BruteForceView() {
                     Params combos
                     <InfoTip content={TIPS.params_combos} />
                   </th>
-                  <th className="px-4 py-3">Type d'attaque</th>
+                  <th className="px-4 py-3"><span className="flex items-center gap-1">Type d'attaque<InfoTip content={TIPS.attack_brute_force} /></span></th>
                   <th className="px-4 py-3 whitespace-nowrap">
                     Top JA4
                     <InfoTip content={TIPS.ja4} />
diff --git a/frontend/src/components/CampaignsView.tsx b/frontend/src/components/CampaignsView.tsx
index 6ceaee2..dc412b9 100644
--- a/frontend/src/components/CampaignsView.tsx
+++ b/frontend/src/components/CampaignsView.tsx
@@ -2,6 +2,8 @@ import { useState, useEffect, useCallback, useMemo } from 'react';
 import { useNavigate } from 'react-router-dom';
 import DataTable, { Column } from './ui/DataTable';
 import ThreatBadge from './ui/ThreatBadge';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 // ─── Types ────────────────────────────────────────────────────────────────────
 
@@ -433,7 +435,7 @@ function ClusterCard({ cluster, expanded, ips, loadingIPs, onToggle, onNavigate
           </span>
           {cluster.asn && (
             <span className="text-text-secondary">
-              ASN <span className="text-text-primary font-mono font-semibold">{cluster.asn}</span>
+              <span className="flex items-center gap-1">ASN<InfoTip content={TIPS.asn} /></span> <span className="text-text-primary font-mono font-semibold">{cluster.asn}</span>
             </span>
           )}
           {cluster.primary_target && (
@@ -447,7 +449,7 @@ function ClusterCard({ cluster, expanded, ips, loadingIPs, onToggle, onNavigate
         <div className="space-y-1.5">
           {cluster.ja4 && (
             <div className="flex items-center gap-2 text-xs">
-              <span className="text-text-disabled w-8">JA4</span>
+              <span className="text-text-disabled w-8 flex items-center gap-0.5">JA4<InfoTip content={TIPS.ja4} /></span>
               <code className="font-mono text-text-secondary bg-background-card px-2 py-0.5 rounded truncate max-w-xs">
                 {cluster.ja4}
               </code>
@@ -477,7 +479,10 @@ function ClusterCard({ cluster, expanded, ips, loadingIPs, onToggle, onNavigate
         {/* Score bar */}
         <div>
           <div className="flex items-center justify-between mb-1">
-            <span className="text-text-secondary text-xs">Score menace</span>
+            <span className="text-text-secondary text-xs flex items-center gap-1">
+              Score menace
+              <InfoTip content={TIPS.risk_score_inv} />
+            </span>
             <span className={`text-xs font-mono font-semibold ${scoreColor}`}>{cluster.score}/100</span>
           </div>
           <div className="relative h-2 bg-background-card rounded-full overflow-hidden">
@@ -532,7 +537,7 @@ function ClusterCard({ cluster, expanded, ips, loadingIPs, onToggle, onNavigate
                     <th className="px-4 py-2 text-text-secondary font-medium text-xs">IP</th>
                     <th className="px-4 py-2 text-text-secondary font-medium text-xs">JA4</th>
                     <th className="px-4 py-2 text-text-secondary font-medium text-xs">Détections</th>
-                    <th className="px-4 py-2 text-text-secondary font-medium text-xs">Confiance</th>
+                    <th className="px-4 py-2 text-text-secondary font-medium text-xs"><span className="flex items-center gap-1">Confiance<InfoTip content={TIPS.confiance} /></span></th>
                     <th className="px-4 py-2 text-text-secondary font-medium text-xs" />
                   </tr>
                 </thead>
@@ -759,6 +764,7 @@ function BehavioralMatrix({ clusters }: { clusters: ClusterData[] }) {
     {
       key: 'score',
       label: 'Score',
+      tooltip: TIPS.risk_score_inv,
       align: 'right',
       render: (v: number) => (
         <span className={`text-xs font-mono font-semibold ${getConfidenceTextColor(v / 100)}`}>
@@ -774,6 +780,7 @@ function BehavioralMatrix({ clusters }: { clusters: ClusterData[] }) {
     {
       key: 'trend',
       label: 'Tendance',
+      tooltip: TIPS.tendance,
       sortable: false,
       render: (_: string, row: BehavioralRow) =>
         row.trend === 'up' ? (
@@ -916,7 +923,7 @@ function BotnetRow({ item, onInvestigate }: { item: BotnetItem; onInvestigate: (
           </div>
         </td>
         <td className="px-4 py-3">
-          <span className={`text-xs px-2 py-1 rounded-full ${badge.bg} ${badge.text}`}>{badge.label}</span>
+          <span title={item.botnet_class === 'global_botnet' ? TIPS.botnet_global : item.botnet_class === 'regional_botnet' ? TIPS.botnet_regional : TIPS.botnet_concentrated} className={`text-xs px-2 py-1 rounded-full ${badge.bg} ${badge.text}`}>{badge.label}</span>
         </td>
         <td className="px-4 py-3">
           <button
@@ -1046,7 +1053,7 @@ function BotnetTab() {
                 <th className="px-4 py-3">IPs distinctes</th>
                 <th className="px-4 py-3">Pays</th>
                 <th className="px-4 py-3">Hosts ciblés</th>
-                <th className="px-4 py-3">Score distribution</th>
+                <th className="px-4 py-3"><span className="flex items-center gap-1">Score distribution<InfoTip content={TIPS.risk_score_inv} /></span></th>
                 <th className="px-4 py-3">Classe</th>
                 <th className="px-4 py-3"></th>
               </tr>
diff --git a/frontend/src/components/CorrelationGraph.tsx b/frontend/src/components/CorrelationGraph.tsx
index 0d93e1d..f823dec 100644
--- a/frontend/src/components/CorrelationGraph.tsx
+++ b/frontend/src/components/CorrelationGraph.tsx
@@ -15,6 +15,8 @@ import ReactFlow, {
 } from 'reactflow';
 import 'reactflow/dist/style.css';
 import { useEffect, useState, useCallback, memo } from 'react';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 // ─── Types ───────────────────────────────────────────────────────────────────
 
@@ -510,7 +512,7 @@ function GraphInner({ rawData, loading, error, filters, toggleFilter, height, ip
           position="bottom-left"
           className="bg-background-secondary/95 border border-background-card rounded-lg px-3 py-2 shadow-lg text-xs text-text-secondary"
         >
-          {nodes.length} nœuds · {edges.length} arêtes
+          <span className="flex items-center gap-1">{nodes.length} nœuds · {edges.length} arêtes<InfoTip content={TIPS.correlation_node} /></span>
         </Panel>
       </ReactFlow>
     </div>
diff --git a/frontend/src/components/EntityInvestigationView.tsx b/frontend/src/components/EntityInvestigationView.tsx
index 4dd770c..6a390f5 100644
--- a/frontend/src/components/EntityInvestigationView.tsx
+++ b/frontend/src/components/EntityInvestigationView.tsx
@@ -1,5 +1,7 @@
 import { useParams, useNavigate } from 'react-router-dom';
 import { useEffect, useState } from 'react';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 interface EntityStats {
   entity_type: string;
@@ -194,7 +196,7 @@ export function EntityInvestigationView() {
 
         {/* Panel 2: JA4 Fingerprints */}
         <div className="bg-background-secondary rounded-lg p-6 mb-6">
-          <h3 className="text-lg font-medium text-text-primary mb-4">2. JA4 Fingerprints</h3>
+          <h3 className="text-lg font-medium text-text-primary mb-4"><span className="flex items-center gap-1">2. JA4 Fingerprints<InfoTip content={TIPS.ja4} /></span></h3>
           <div className="space-y-2">
             {data.related.ja4s.slice(0, 10).map((ja4, idx) => (
               <div key={idx} className="flex items-center justify-between bg-background-card rounded-lg p-3">
@@ -251,7 +253,7 @@ export function EntityInvestigationView() {
 
         {/* Panel 4: Client Headers */}
         <div className="bg-background-secondary rounded-lg p-6 mb-6">
-          <h3 className="text-lg font-medium text-text-primary mb-4">4. Client Headers</h3>
+          <h3 className="text-lg font-medium text-text-primary mb-4"><span className="flex items-center gap-1">4. Client Headers<InfoTip content={TIPS.accept_encoding} /></span></h3>
           <div className="space-y-3">
             {data.client_headers.slice(0, 10).map((header, idx) => (
               <div key={idx} className="bg-background-card rounded-lg p-3 space-y-2">
@@ -347,7 +349,7 @@ export function EntityInvestigationView() {
         <div className="grid grid-cols-1 md:grid-cols-2 gap-6 mb-6">
           {/* ASNs */}
           <div className="bg-background-secondary rounded-lg p-6">
-            <h3 className="text-lg font-medium text-text-primary mb-4">ASNs</h3>
+            <h3 className="text-lg font-medium text-text-primary mb-4"><span className="flex items-center gap-1">ASNs<InfoTip content={TIPS.asn} /></span></h3>
             <div className="space-y-2">
               {data.related.asns.slice(0, 10).map((asn, idx) => (
                 <div key={idx} className="bg-background-card rounded-lg p-3">
diff --git a/frontend/src/components/FingerprintsView.tsx b/frontend/src/components/FingerprintsView.tsx
index 9d2d13b..c3969c0 100644
--- a/frontend/src/components/FingerprintsView.tsx
+++ b/frontend/src/components/FingerprintsView.tsx
@@ -2,6 +2,8 @@ import { useState, useEffect, useCallback, Fragment, useMemo } from 'react';
 import { useNavigate } from 'react-router-dom';
 import DataTable, { Column } from './ui/DataTable';
 import ThreatBadge from './ui/ThreatBadge';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 // ─── Types ────────────────────────────────────────────────────────────────────
 
@@ -489,7 +491,7 @@ function SpoofingPanel() {
             <span className="text-sm font-semibold text-text-primary">
               JA4 suspects de spoofing — {data.total} fingerprints analysés
             </span>
-            <span className="text-xs text-text-disabled">Score de spoofing [0-100]</span>
+            <span className="text-xs text-text-disabled flex items-center gap-1">Score de spoofing [0-100]<InfoTip content={TIPS.spoofing_score} /></span>
           </div>
           <div className="divide-y divide-background-card">
             {data.items.length === 0 && (
@@ -563,11 +565,11 @@ function SpoofingPanel() {
                   {/* Indicators */}
                   <div className="mt-3 grid grid-cols-2 sm:grid-cols-3 md:grid-cols-5 gap-2">
                     {[
-                      { label: 'UA/CH mismatch', value: `${item.indicators.ua_ch_mismatch_pct}%`, warn: item.indicators.ua_ch_mismatch_pct > 20 },
-                      { label: 'Browser score', value: `${item.indicators.avg_browser_score}/100`, warn: item.indicators.avg_browser_score > 50 },
-                      { label: 'SNI mismatch', value: `${item.indicators.sni_mismatch_pct}%`, warn: item.indicators.sni_mismatch_pct > 10 },
-                      { label: 'JA4 rare', value: `${item.indicators.rare_ja4_pct}%`, warn: item.indicators.rare_ja4_pct > 50 },
-                      { label: 'UA rotation', value: `${item.indicators.ua_rotating_pct}%`, warn: item.indicators.ua_rotating_pct > 10 },
+                      { label: 'UA/CH mismatch', value: `${item.indicators.ua_ch_mismatch_pct}%`, warn: item.indicators.ua_ch_mismatch_pct > 20, tip: TIPS.ua_mismatch },
+                      { label: 'Browser score', value: `${item.indicators.avg_browser_score}/100`, warn: item.indicators.avg_browser_score > 50, tip: TIPS.browser_score },
+                      { label: 'SNI mismatch', value: `${item.indicators.sni_mismatch_pct}%`, warn: item.indicators.sni_mismatch_pct > 10, tip: TIPS.sni_mismatch },
+                      { label: 'JA4 rare', value: `${item.indicators.rare_ja4_pct}%`, warn: item.indicators.rare_ja4_pct > 50, tip: TIPS.ja4_rare_pct },
+                      { label: 'UA rotation', value: `${item.indicators.ua_rotating_pct}%`, warn: item.indicators.ua_rotating_pct > 10, tip: TIPS.ua_rotation },
                     ].map((ind) => (
                       <div
                         key={ind.label}
@@ -578,7 +580,7 @@ function SpoofingPanel() {
                         <div className={`text-sm font-semibold ${ind.warn ? 'text-threat-high' : 'text-text-primary'}`}>
                           {ind.value}
                         </div>
-                        <div className="text-xs text-text-disabled mt-0.5">{ind.label}</div>
+                        <div className="text-xs text-text-disabled mt-0.5 flex items-center justify-center gap-0.5">{ind.label}<InfoTip content={ind.tip} /></div>
                       </div>
                     ))}
                   </div>
@@ -603,8 +605,8 @@ function SpoofingPanel() {
       {activeSubTab === 'matrix' && (
         <div className="bg-background-secondary rounded-lg overflow-hidden">
           <div className="px-4 py-3 border-b border-background-card">
-            <span className="text-sm font-semibold text-text-primary">
-              Matrice JA4 × User-Agent — {matrixData.length} fingerprints
+            <span className="text-sm font-semibold text-text-primary flex items-center gap-1">
+              Matrice JA4 × User-Agent — {matrixData.length} fingerprints<InfoTip content={TIPS.ja4} />
             </span>
             <p className="text-xs text-text-disabled mt-0.5">
               Pour chaque JA4, répartition des User-Agents observés. 🎭 = spoofing suspect détecté.
@@ -1204,7 +1206,7 @@ export function FingerprintsView() {
                 onClick={() => handleColSort('botnet_score')}
               >
                 <span className="inline-flex items-center gap-1">
-                  Score botnet
+                  Score botnet<InfoTip content={TIPS.risk_score_inv} />
                   {sortField === 'botnet_score'
                     ? <span className="text-accent-primary">{sortDir === 'desc' ? '↓' : '↑'}</span>
                     : <span className="text-text-disabled opacity-50">⇅</span>}
diff --git a/frontend/src/components/HeaderFingerprintView.tsx b/frontend/src/components/HeaderFingerprintView.tsx
index 0312b17..3c15ca3 100644
--- a/frontend/src/components/HeaderFingerprintView.tsx
+++ b/frontend/src/components/HeaderFingerprintView.tsx
@@ -241,12 +241,14 @@ export function HeaderFingerprintView() {
     {
       key: 'sec_fetch_mode',
       label: 'Sec-Fetch Mode',
+      tooltip: TIPS.sec_fetch_dest,
       sortable: true,
       render: (v) => <span className="text-text-secondary">{v || '—'}</span>,
     },
     {
       key: 'sec_fetch_dest',
       label: 'Sec-Fetch Dest',
+      tooltip: TIPS.sec_fetch_dest,
       sortable: true,
       render: (v) => <span className="text-text-secondary">{v || '—'}</span>,
     },
diff --git a/frontend/src/components/IncidentsView.tsx b/frontend/src/components/IncidentsView.tsx
index bd8df61..19409cc 100644
--- a/frontend/src/components/IncidentsView.tsx
+++ b/frontend/src/components/IncidentsView.tsx
@@ -1,5 +1,7 @@
 import { useEffect, useState } from 'react';
 import { useNavigate } from 'react-router-dom';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 interface IncidentCluster {
   id: string;
@@ -147,10 +149,10 @@ export function IncidentsView() {
       {baseline && (
         <div className="grid grid-cols-3 gap-3">
           {([
-            { key: 'total_detections', label: 'Détections 24h', icon: '📊' },
-            { key: 'unique_ips',       label: 'IPs uniques',    icon: '🖥️' },
-            { key: 'critical_alerts',  label: 'Alertes CRITICAL', icon: '🔴' },
-          ] as { key: keyof BaselineData; label: string; icon: string }[]).map(({ key, label, icon }) => {
+            { key: 'total_detections', label: 'Détections 24h', icon: '📊', tip: TIPS.total_detections_stat },
+            { key: 'unique_ips',       label: 'IPs uniques',    icon: '🖥️', tip: TIPS.unique_ips_stat },
+            { key: 'critical_alerts',  label: 'Alertes CRITICAL', icon: '🔴', tip: TIPS.risk_critical },
+          ] as { key: keyof BaselineData; label: string; icon: string; tip: string }[]).map(({ key, label, icon, tip }) => {
             const m = baseline[key];
             const up = m.pct_change > 0;
             const neutral = m.pct_change === 0;
@@ -158,7 +160,7 @@ export function IncidentsView() {
               <div key={key} className="bg-background-card border border-border rounded-lg px-4 py-3 flex items-center gap-3">
                 <span className="text-xl">{icon}</span>
                 <div className="flex-1 min-w-0">
-                  <div className="text-xs text-text-disabled uppercase tracking-wide">{label}</div>
+                  <div className="text-xs text-text-disabled uppercase tracking-wide flex items-center gap-1">{label}<InfoTip content={tip} /></div>
                   <div className="text-xl font-bold text-text-primary">{m.today.toLocaleString('fr-FR')}</div>
                   <div className="text-xs text-text-secondary">hier: {m.yesterday.toLocaleString('fr-FR')}</div>
                 </div>
@@ -292,7 +294,7 @@ export function IncidentsView() {
                 <div className="flex-1">
                   <div className="flex items-start justify-between mb-3">
                     <div className="flex items-center gap-3">
-                      <span className={`px-2 py-1 rounded text-xs font-bold ${getSeverityBadgeColor(cluster.severity)}`}>
+                      <span title={cluster.severity === 'CRITICAL' ? TIPS.risk_critical : cluster.severity === 'HIGH' ? TIPS.risk_high : cluster.severity === 'MEDIUM' ? TIPS.risk_medium : TIPS.risk_low} className={`px-2 py-1 rounded text-xs font-bold ${getSeverityBadgeColor(cluster.severity)}`}>
                         {cluster.severity}
                       </span>
                       <span className="text-lg font-bold text-text-primary">{cluster.id}</span>
@@ -302,7 +304,7 @@ export function IncidentsView() {
                     <div className="flex items-center gap-4">
                       <div className="text-right">
                         <div className="text-2xl font-bold text-text-primary">{cluster.score}/100</div>
-                        <div className="text-xs text-text-secondary">Score de risque</div>
+                        <div className="text-xs text-text-secondary flex items-center gap-1">Score de risque<InfoTip content={TIPS.risk_score_inv} /></div>
                       </div>
                     </div>
                   </div>
@@ -327,11 +329,11 @@ export function IncidentsView() {
                       </div>
                     </div>
                     <div>
-                      <div className="text-xs text-text-secondary mb-1">ASN</div>
+                      <div className="text-xs text-text-secondary mb-1 flex items-center gap-1">ASN<InfoTip content={TIPS.asn} /></div>
                       <div className="text-text-primary">AS{cluster.asn || '?'}</div>
                     </div>
                     <div>
-                      <div className="text-xs text-text-secondary mb-1">Tendance</div>
+                      <div className="text-xs text-text-secondary mb-1 flex items-center gap-1">Tendance<InfoTip content={TIPS.tendance} /></div>
                       <div className={`font-bold ${
                         cluster.trend === 'up' ? 'text-red-500' : 
                         cluster.trend === 'down' ? 'text-green-500' : 
@@ -344,7 +346,7 @@ export function IncidentsView() {
 
                   {cluster.ja4 && (
                     <div className="mb-3 p-2 bg-background-card rounded">
-                      <div className="text-xs text-text-secondary mb-1">JA4 Principal</div>
+                      <div className="text-xs text-text-secondary mb-1 flex items-center gap-1">JA4 Principal<InfoTip content={TIPS.ja4} /></div>
                       <div className="font-mono text-xs text-text-primary break-all">{cluster.ja4}</div>
                     </div>
                   )}
diff --git a/frontend/src/components/JA4InvestigationView.tsx b/frontend/src/components/JA4InvestigationView.tsx
index 26a5c97..aa78b71 100644
--- a/frontend/src/components/JA4InvestigationView.tsx
+++ b/frontend/src/components/JA4InvestigationView.tsx
@@ -1,6 +1,8 @@
 import { useParams, useNavigate } from 'react-router-dom';
 import { useEffect, useState } from 'react';
 import { JA4CorrelationSummary } from './analysis/JA4CorrelationSummary';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 interface JA4InvestigationData {
   ja4: string;
@@ -164,7 +166,7 @@ export function JA4InvestigationView() {
       <div className="bg-background-secondary rounded-lg p-6">
         <div className="flex items-start justify-between mb-6">
           <div className="flex-1">
-            <div className="text-sm text-text-secondary mb-2">JA4 Fingerprint</div>
+            <div className="text-sm text-text-secondary mb-2 flex items-center gap-1">JA4 Fingerprint<InfoTip content={TIPS.ja4} /></div>
             <div className="bg-background-card rounded-lg p-3 font-mono text-sm text-text-primary break-all">
               {data.ja4}
             </div>
@@ -176,7 +178,7 @@ export function JA4InvestigationView() {
         </div>
 
         <div className="grid grid-cols-2 md:grid-cols-4 gap-4">
-          <StatBox label="IPs Uniques" value={data.unique_ips.toLocaleString()} />
+          <StatBox label="IPs Uniques" value={data.unique_ips.toLocaleString()} tip={TIPS.unique_ips_stat} />
           <StatBox label="Première détection" value={formatDate(data.first_seen)} />
           <StatBox label="Dernière détection" value={formatDate(data.last_seen)} />
           <StatBox label="User-Agents" value={data.user_agents.length.toString()} />
@@ -247,7 +249,7 @@ export function JA4InvestigationView() {
           </div>
 
           <div className="bg-background-secondary rounded-lg p-6">
-            <h3 className="text-lg font-medium text-text-primary mb-4">🏢 TOP ASNs</h3>
+            <h3 className="text-lg font-medium text-text-primary mb-4"><span className="flex items-center gap-1">🏢 TOP ASNs<InfoTip content={TIPS.asn} /></span></h3>
             <div className="space-y-3">
               {data.top_asns.map((asn, idx) => (
                 <div key={idx} className="space-y-1">
@@ -318,10 +320,10 @@ export function JA4InvestigationView() {
   );
 }
 
-function StatBox({ label, value }: { label: string; value: string }) {
+function StatBox({ label, value, tip }: { label: string; value: string; tip?: string }) {
   return (
     <div className="bg-background-card rounded-lg p-4">
-      <div className="text-sm text-text-secondary mb-1">{label}</div>
+      <div className="text-sm text-text-secondary mb-1 flex items-center gap-1">{label}{tip && <InfoTip content={tip} />}</div>
       <div className="text-2xl font-bold text-text-primary">{value}</div>
     </div>
   );
diff --git a/frontend/src/components/PivotView.tsx b/frontend/src/components/PivotView.tsx
index 034cce7..4ecf728 100644
--- a/frontend/src/components/PivotView.tsx
+++ b/frontend/src/components/PivotView.tsx
@@ -12,6 +12,8 @@
 
 import { useState, useCallback } from 'react';
 import { useNavigate } from 'react-router-dom';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 // ─── Types ────────────────────────────────────────────────────────────────────
 
@@ -47,11 +49,11 @@ interface VariabilityData {
 
 type AttrKey = keyof VariabilityData['attributes'];
 
-const ATTR_ROWS: { key: AttrKey; label: string; icon: string }[] = [
-  { key: 'ja4',         label: 'JA4 Fingerprint', icon: '🔐' },
+const ATTR_ROWS: { key: AttrKey; label: string; icon: string; tip?: string }[] = [
+  { key: 'ja4',         label: 'JA4 Fingerprint', icon: '🔐', tip: TIPS.ja4 },
   { key: 'user_agents', label: 'User-Agents',      icon: '🤖' },
   { key: 'countries',   label: 'Pays',             icon: '🌍' },
-  { key: 'asns',        label: 'ASN',              icon: '🏢' },
+  { key: 'asns',        label: 'ASN',              icon: '🏢', tip: TIPS.asn },
   { key: 'hosts',       label: 'Hosts cibles',     icon: '🖥️' },
   { key: 'subnets',     label: 'Subnets',          icon: '🔷' },
 ];
@@ -283,6 +285,7 @@ export function PivotView() {
                       <div className="flex items-center gap-1.5">
                         <span>{row.icon}</span>
                         <span className="text-xs font-medium text-text-secondary">{row.label}</span>
+                        {row.tip && <InfoTip content={row.tip} />}
                       </div>
                       {shared.size > 0 && (
                         <div className="mt-1">
diff --git a/frontend/src/components/SubnetInvestigation.tsx b/frontend/src/components/SubnetInvestigation.tsx
index a86d45b..8649085 100644
--- a/frontend/src/components/SubnetInvestigation.tsx
+++ b/frontend/src/components/SubnetInvestigation.tsx
@@ -1,5 +1,7 @@
 import { useEffect, useState } from 'react';
 import { useParams, useNavigate } from 'react-router-dom';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 interface SubnetIP {
   ip: string;
@@ -139,7 +141,7 @@ export function SubnetInvestigation() {
           <div className="text-2xl font-bold text-text-primary">{stats.total_detections.toLocaleString()}</div>
         </div>
         <div className="bg-background-card rounded-lg p-4">
-          <div className="text-sm text-text-secondary mb-1">JA4 Uniques</div>
+          <div className="text-sm text-text-secondary mb-1 flex items-center gap-1">JA4 Uniques<InfoTip content={TIPS.ja4} /></div>
           <div className="text-2xl font-bold text-text-primary">{stats.unique_ja4}</div>
         </div>
         <div className="bg-background-card rounded-lg p-4">
@@ -161,7 +163,7 @@ export function SubnetInvestigation() {
           </div>
         </div>
         <div className="bg-background-card rounded-lg p-4">
-          <div className="text-sm text-text-secondary mb-1">ASN Principal</div>
+          <div className="text-sm text-text-secondary mb-1 flex items-center gap-1">ASN Principal<InfoTip content={TIPS.asn} /></div>
           <div className="text-2xl font-bold text-text-primary">AS{stats.primary_asn}</div>
         </div>
         <div className="bg-background-card rounded-lg p-4">
@@ -187,8 +189,8 @@ export function SubnetInvestigation() {
                 <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">UA</th>
                 <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Pays</th>
                 <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">ASN</th>
-                <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Menace</th>
-                <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Score</th>
+                <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase"><span className="flex items-center gap-1">Menace<InfoTip content={TIPS.threat_level} /></span></th>
+                <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase"><span className="flex items-center gap-1">Score<InfoTip content={TIPS.risk_score_inv} /></span></th>
                 <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Actions</th>
               </tr>
             </thead>
diff --git a/frontend/src/components/ThreatIntelView.tsx b/frontend/src/components/ThreatIntelView.tsx
index b2079d0..b5e16e4 100644
--- a/frontend/src/components/ThreatIntelView.tsx
+++ b/frontend/src/components/ThreatIntelView.tsx
@@ -1,4 +1,6 @@
 import { useEffect, useState } from 'react';
+import { InfoTip } from './ui/Tooltip';
+import { TIPS } from './ui/tooltips';
 
 interface Classification {
   ip?: string;
@@ -229,7 +231,7 @@ export function ThreatIntelView() {
                   <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Entité</th>
                   <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Label</th>
                   <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Tags</th>
-                  <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Confiance</th>
+                  <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase"><span className="flex items-center gap-1">Confiance<InfoTip content={TIPS.confiance} /></span></th>
                   <th className="px-4 py-3 text-left text-xs font-medium text-text-secondary uppercase">Analyste</th>
                 </tr>
               </thead>