diff --git a/coordinator/dashboard.py b/coordinator/dashboard.py
index db56b71..d47c6c8 100644
--- a/coordinator/dashboard.py
+++ b/coordinator/dashboard.py
@@ -407,6 +407,107 @@ def build_presence() -> dict:
     }
 
 
+SESSION_GAP_SECS = 120  # gap > 2 min between events from same src = new session
+
+
+def _finalize_session(active: dict) -> dict:
+    reasons   = active["reasons"]
+    dominant  = max(set(reasons), key=reasons.count) if reasons else 0
+    _, classification = deauth_reason_info(dominant)
+
+    rssi_vals = [r for r in active["rssi_vals"] if r is not None]
+    start_dt  = datetime.datetime.fromisoformat(active["start"])
+    end_dt    = datetime.datetime.fromisoformat(active["end"])
+    duration  = int((end_dt - start_dt).total_seconds())
+    frames    = len(active["frames"])
+
+    if classification == "attack" and frames >= 5:
+        severity = "attack"
+    elif frames >= 3 or classification in ("attack", "suspicious"):
+        severity = "suspicious"
+    else:
+        severity = "normal"
+
+    src_vendor, src_rand = oui_lookup(active["src"])
+    return {
+        "src":            active["src"],
+        "src_vendor":     src_vendor,
+        "src_randomized": src_rand,
+        "start":          active["start"],
+        "end":            active["end"],
+        "duration_secs":  duration,
+        "frame_count":    frames,
+        "unique_bssids":  list(active["bssids"]),
+        "unique_targets": list(active["targets"]),
+        "node_count":     len(active["nodes"]),
+        "nodes":          list(active["nodes"]),
+        "peak_rssi":      max(rssi_vals) if rssi_vals else None,
+        "avg_rssi":       round(sum(rssi_vals) / len(rssi_vals), 1) if rssi_vals else None,
+        "dominant_reason": dominant,
+        "severity":       severity,
+        "events":         active["frames"][:50],
+    }
+
+
+def build_sessions() -> list[dict]:
+    cutoff = (datetime.datetime.utcnow() - datetime.timedelta(days=7)).isoformat(timespec="seconds")
+
+    rows = query("""
+        SELECT src, dst, bssid, reason, rssi, received_at, node_id, subtype
+        FROM deauth_events
+        WHERE received_at > ?
+        ORDER BY src, received_at
+    """, (cutoff,))
+
+    if not rows:
+        return []
+
+    sessions: list[dict] = []
+    active: dict | None  = None
+
+    for row in rows:
+        src = row["src"]
+        ts  = row["received_at"]
+
+        new_session = False
+        if active is None or active["src"] != src:
+            new_session = True
+        else:
+            last_dt = datetime.datetime.fromisoformat(active["end"])
+            curr_dt = datetime.datetime.fromisoformat(ts)
+            if (curr_dt - last_dt).total_seconds() > SESSION_GAP_SECS:
+                new_session = True
+
+        if new_session:
+            if active is not None:
+                sessions.append(_finalize_session(active))
+            active = {
+                "src":      src,
+                "start":    ts,
+                "end":      ts,
+                "bssids":   set(),
+                "targets":  set(),
+                "nodes":    set(),
+                "reasons":  [],
+                "rssi_vals": [],
+                "frames":   [],
+            }
+
+        active["end"] = ts
+        active["bssids"].add(row["bssid"])
+        active["targets"].add(row["dst"])
+        active["nodes"].add(row["node_id"])
+        active["reasons"].append(row["reason"])
+        active["rssi_vals"].append(row["rssi"])
+        active["frames"].append(row)
+
+    if active is not None:
+        sessions.append(_finalize_session(active))
+
+    sessions.sort(key=lambda s: s["start"], reverse=True)
+    return sessions[:100]
+
+
 def build_alerts() -> dict:
     now         = datetime.datetime.utcnow()
     cutoff_5m   = (now - datetime.timedelta(minutes=5)).isoformat(timespec="seconds")
@@ -881,6 +982,11 @@ async def api_rssi_history(bssid: str, hours: int = 2):
     return series
 
 
+@app.get("/api/sessions")
+async def api_sessions():
+    return build_sessions()
+
+
 @app.get("/api/search")
 async def api_search(q: str = ""):
     return build_search(q)
diff --git a/coordinator/static/dashboard.css b/coordinator/static/dashboard.css
index 5134932..9173306 100644
--- a/coordinator/static/dashboard.css
+++ b/coordinator/static/dashboard.css
@@ -450,6 +450,59 @@ th.group-active { color: var(--green-hi); cursor: pointer; }
 th.group-col    { cursor: pointer; }
 th.group-col:hover { color: var(--text); }
 .nodes-multi { color: var(--green-hi); }
+.mono        { font-family: monospace; font-size: 11px; }
+
+/* ── Sessions ── */
+.sev-attack    { border-left: 2px solid #c0392b; }
+.sev-suspicious { border-left: 2px solid #d4ac0d; }
+.sev-normal    { border-left: 2px solid transparent; }
+
+.sev-label          { font-size: 10px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; }
+.sev-label.sev-attack     { color: #e74c3c; }
+.sev-label.sev-suspicious { color: #f1c40f; }
+.sev-label.sev-normal     { color: var(--text-muted); }
+
+tr.session-row { cursor: pointer; }
+tr.session-row:hover td { background: var(--bg-hover); }
+
+.expand-col  { width: 24px; text-align: center; }
+.expand-btn  { font-size: 9px; color: var(--text-muted); user-select: none; }
+
+td.session-detail-cell { padding: 0; }
+.session-detail-inner  {
+  padding: 10px 16px 12px;
+  background: var(--bg-panel);
+  border-top: 1px solid var(--border);
+}
+.session-meta {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 16px;
+  font-size: 11px;
+  color: var(--text-dim);
+  margin-bottom: 8px;
+}
+.session-meta strong { color: var(--text); }
+
+.session-events-table {
+  width: 100%;
+  border-collapse: collapse;
+  font-size: 11px;
+}
+.session-events-table th {
+  text-align: left;
+  color: var(--text-muted);
+  font-weight: 400;
+  padding: 3px 8px;
+  border-bottom: 1px solid var(--border);
+}
+.session-events-table td {
+  padding: 3px 8px;
+  border-bottom: 1px solid var(--border);
+  color: var(--text-dim);
+}
+.session-events-table tr:last-child td { border-bottom: none; }
+
 
 /* ── Cross-node cells ── */
 .cn-best { color: var(--green-hi); font-weight: 500; }
diff --git a/coordinator/static/dashboard.js b/coordinator/static/dashboard.js
index 49dd31b..61ffdd0 100644
--- a/coordinator/static/dashboard.js
+++ b/coordinator/static/dashboard.js
@@ -11,6 +11,8 @@ let clientsData   = [];
 let clientsGroupBy = null; // null | 'vendor' | 'ssid'
 let presenceData  = {};
 let alertsData    = {};
+let sessionsData  = [];
+let sessionSort   = { col: 'frame_count', dir: 'desc' };
 let chartBssid    = null;
 let chartHours    = 2;
 
@@ -570,6 +572,150 @@ function renderDeauthHeatmap(rows) {
   });
 }
 
+// ── Sessions view ─────────────────────────────────────────────────────────────
+function initSessionSort() {
+  document.querySelectorAll('#sessions-table thead th.sortable').forEach(th => {
+    th.style.cursor = 'pointer';
+    th.addEventListener('click', () => {
+      const col = th.dataset.col;
+      if (sessionSort.col === col) {
+        sessionSort.dir = sessionSort.dir === 'desc' ? 'asc' : 'desc';
+      } else {
+        sessionSort.col = col;
+        sessionSort.dir = 'desc';
+      }
+      document.querySelectorAll('#sessions-table thead th.sortable').forEach(h => {
+        h.classList.remove('sort-active');
+        h.dataset.arrow = '';
+      });
+      th.classList.add('sort-active');
+      th.dataset.arrow = sessionSort.dir === 'desc' ? '↓' : '↑';
+      renderSessionsView();
+    });
+  });
+}
+
+async function fetchSessions() {
+  sessionsData = await fetch('/api/sessions').then(r => r.json());
+  renderSessionsView();
+}
+
+function renderSessionsView() {
+  const tbody = document.getElementById('sessions-tbody');
+  const empty = document.getElementById('sessions-empty');
+  const count = document.getElementById('sessions-count');
+
+  // Sort
+  const { col, dir } = sessionSort;
+  const sevOrder = { attack: 0, suspicious: 1, normal: 2 };
+  const data = [...sessionsData].sort((a, b) => {
+    let av, bv;
+    if (col === 'bssids')   { av = a.unique_bssids.length;  bv = b.unique_bssids.length; }
+    else if (col === 'targets')   { av = a.unique_targets.length; bv = b.unique_targets.length; }
+    else if (col === 'severity')  { av = sevOrder[a.severity] ?? 9; bv = sevOrder[b.severity] ?? 9; }
+    else if (col === 'peak_rssi') { av = a.peak_rssi ?? -200; bv = b.peak_rssi ?? -200; }
+    else                          { av = a[col]; bv = b[col]; }
+    if (av < bv) return dir === 'desc' ? 1 : -1;
+    if (av > bv) return dir === 'desc' ? -1 : 1;
+    return 0;
+  });
+
+  count.textContent = `${data.length} session${data.length !== 1 ? 's' : ''}`;
+
+  if (!data.length) {
+    tbody.innerHTML = '';
+    empty.style.display = 'block';
+    return;
+  }
+  empty.style.display = 'none';
+
+  tbody.innerHTML = '';
+
+  data.forEach((s, idx) => {
+    const sevClass = `sev-${s.severity}`;
+    const duration = s.duration_secs < 60
+      ? `${s.duration_secs}s`
+      : `${Math.floor(s.duration_secs / 60)}m ${s.duration_secs % 60}s`;
+    const vendor = s.src_randomized ? '<span class="muted">Randomized</span>' : (s.src_vendor || '<span class="muted">Unknown</span>');
+
+    const mainRow = document.createElement('tr');
+    mainRow.className = `session-row ${sevClass}`;
+    mainRow.dataset.idx = idx;
+    mainRow.innerHTML = `
+      <td class="expand-col"><span class="expand-btn">▶</span></td>
+      <td class="mono">${s.src}</td>
+      <td>${vendor}</td>
+      <td>${s.start.replace('T', ' ')}</td>
+      <td>${duration}</td>
+      <td>${s.frame_count}</td>
+      <td>${s.unique_bssids.length}</td>
+      <td>${s.unique_targets.length}</td>
+      <td>${s.node_count}</td>
+      <td>${s.peak_rssi != null ? s.peak_rssi + ' dBm' : '—'}</td>
+      <td><span class="sev-label ${sevClass}">${s.severity}</span></td>
+    `;
+    tbody.appendChild(mainRow);
+
+    // Build detail row
+    const detailRow = document.createElement('tr');
+    detailRow.className = 'session-detail';
+    detailRow.dataset.sessionIdx = idx;
+
+    const bssidList  = s.unique_bssids.join(', ') || '—';
+    const targetList = s.unique_targets.join(', ') || '—';
+    const nodeList   = (s.nodes || []).join(', ') || '—';
+
+    let evRows = '';
+    (s.events || []).forEach(ev => {
+      evRows += `<tr>
+        <td>${ev.received_at.replace('T', ' ')}</td>
+        <td>${ev.node_id}</td>
+        <td>${ev.subtype}</td>
+        <td class="mono">${ev.src}</td>
+        <td class="mono">${ev.dst}</td>
+        <td class="mono">${ev.bssid}</td>
+        <td>${ev.reason}</td>
+        <td>${ev.rssi} dBm</td>
+      </tr>`;
+    });
+    const truncNote = s.frame_count > 50
+      ? `<div class="muted" style="font-size:10px;margin-top:4px">Showing first 50 of ${s.frame_count} events</div>`
+      : '';
+
+    detailRow.innerHTML = `
+      <td colspan="11" class="session-detail-cell">
+        <div class="session-detail-inner">
+          <div class="session-meta">
+            <span><strong>BSSIDs:</strong> ${bssidList}</span>
+            <span><strong>Targets:</strong> ${targetList}</span>
+            <span><strong>Nodes:</strong> ${nodeList}</span>
+            <span><strong>Avg RSSI:</strong> ${s.avg_rssi != null ? s.avg_rssi + ' dBm' : '—'}</span>
+            <span><strong>Reason:</strong> ${s.dominant_reason}</span>
+          </div>
+          <table class="session-events-table">
+            <thead><tr>
+              <th>Time</th><th>Node</th><th>Type</th><th>Src</th>
+              <th>Dst</th><th>BSSID</th><th>Reason</th><th>RSSI</th>
+            </tr></thead>
+            <tbody>${evRows}</tbody>
+          </table>
+          ${truncNote}
+        </div>
+      </td>
+    `;
+
+    detailRow.style.display = 'none';
+
+    tbody.appendChild(detailRow);
+
+    mainRow.addEventListener('click', () => {
+      const isOpen = detailRow.style.display !== 'none';
+      detailRow.style.display = isOpen ? 'none' : '';
+      mainRow.querySelector('.expand-btn').textContent = isOpen ? '▶' : '▼';
+    });
+  });
+}
+
 // ── Alerts view ───────────────────────────────────────────────────────────────
 async function fetchAlerts() {
   alertsData = await fetch('/api/alerts').then(r => r.json());
@@ -1022,6 +1168,7 @@ function setView(view) {
   document.getElementById('view-detail').classList.toggle('active',          view === 'detail');
   document.getElementById('view-presence').classList.toggle('active',         view === 'presence');
   document.getElementById('view-alerts').classList.toggle('active',            view === 'alerts');
+  document.getElementById('view-sessions').classList.toggle('active',          view === 'sessions');
   document.getElementById('view-analysis').classList.toggle('active',          view === 'analysis');
   document.getElementById('view-search').classList.toggle('active',            view === 'search');
   document.getElementById('tab-feed').classList.toggle('active',       view === 'feed' || view === 'detail');
@@ -1030,6 +1177,7 @@ function setView(view) {
   document.getElementById('tab-clients').classList.toggle('active',    view === 'clients');
   document.getElementById('tab-presence').classList.toggle('active',   view === 'presence');
   document.getElementById('tab-alerts').classList.toggle('active',     view === 'alerts');
+  document.getElementById('tab-sessions').classList.toggle('active',   view === 'sessions');
   document.getElementById('tab-analysis').classList.toggle('active',   view === 'analysis');
   document.getElementById('tab-search').classList.toggle('active',     view === 'search');
 }
@@ -1052,6 +1200,8 @@ async function showPresence() { setView('presence'); await fetchPresence(); }
 
 async function showAlerts() { setView('alerts'); await fetchAlerts(); }
 
+async function showSessions() { setView('sessions'); initSessionSort(); await fetchSessions(); }
+
 async function showAnalysis() {
   setView('analysis');
   const data = await fetch('/api/alerts').then(r => r.json());
diff --git a/coordinator/templates/dashboard.html b/coordinator/templates/dashboard.html
index 26f1d36..b30f165 100644
--- a/coordinator/templates/dashboard.html
+++ b/coordinator/templates/dashboard.html
@@ -30,6 +30,7 @@
     <button class="tab-btn"        id="tab-clients"    onclick="showClients()">Clients</button>
     <button class="tab-btn"        id="tab-presence"   onclick="showPresence()">Presence</button>
     <button class="tab-btn"        id="tab-alerts"     onclick="showAlerts()">Alerts</button>
+    <button class="tab-btn"        id="tab-sessions"   onclick="showSessions()">Sessions</button>
     <button class="tab-btn"        id="tab-analysis"   onclick="showAnalysis()">Analysis</button>
     <button class="tab-btn"        id="tab-search"     onclick="showSearch()">Search</button>
   </div>
@@ -404,6 +405,36 @@
 
     </div><!-- /#view-alerts -->
 
+    <!-- Sessions view -->
+    <div id="view-sessions" class="view">
+      <div class="section-header">
+        <span class="section-title">Attack Sessions</span>
+        <span class="section-count" id="sessions-count"></span>
+        <span class="presence-sub">last 7 days · deauth events grouped by source MAC + 2-min gap</span>
+      </div>
+      <div class="tbl-wrap">
+        <table id="sessions-table">
+          <thead>
+            <tr>
+              <th></th>
+              <th>Source MAC</th>
+              <th>Vendor</th>
+              <th class="sortable" data-col="start"         data-arrow="">Start</th>
+              <th class="sortable" data-col="duration_secs" data-arrow="">Duration</th>
+              <th class="sortable sort-active" data-col="frame_count" data-arrow="↓">Frames</th>
+              <th class="sortable" data-col="bssids"        data-arrow="">BSSIDs</th>
+              <th class="sortable" data-col="targets"       data-arrow="">Targets</th>
+              <th class="sortable" data-col="node_count"    data-arrow="">Nodes</th>
+              <th class="sortable" data-col="peak_rssi"     data-arrow="">Peak RSSI</th>
+              <th class="sortable" data-col="severity"      data-arrow="">Severity</th>
+            </tr>
+          </thead>
+          <tbody id="sessions-tbody"></tbody>
+        </table>
+        <div class="empty" id="sessions-empty" style="display:none">No sessions in the last 7 days.</div>
+      </div>
+    </div>
+
     <!-- Analysis view -->
     <div id="view-analysis" class="view">