diff --git a/lib/project-sessions.js b/lib/project-sessions.js
index a68da8a..fe6cd64 100644
--- a/lib/project-sessions.js
+++ b/lib/project-sessions.js
@@ -231,6 +231,11 @@ function attachSessions(ctx) {
 
     if (msg.type === "set_session_visibility") {
       if (typeof msg.sessionId === "number" && (msg.visibility === "shared" || msg.visibility === "private")) {
+        var visTarget = sm.sessions.get(msg.sessionId);
+        if (!visTarget) return true;
+        if (usersModule.isMultiUser() && ws._clayUser) {
+          if (!usersModule.canAccessSession(ws._clayUser.id, visTarget, { visibility: "public" })) return true;
+        }
         sm.setSessionVisibility(msg.sessionId, msg.visibility);
       }
       return true;
@@ -587,6 +592,12 @@ function attachSessions(ctx) {
     }
 
     if (msg.type === "kill_process") {
+      // Restrict to admins in multi-user mode — any user could otherwise SIGTERM
+      // another user's running claude subprocess (lr-eb1a).
+      if (usersModule.isMultiUser() && (!ws._clayUser || ws._clayUser.role !== "admin")) {
+        sendTo(ws, { type: "error", message: "Admin access required" });
+        return true;
+      }
       var pid = msg.pid;
       if (!pid || typeof pid !== "number") return true;
       // Verify target is actually a claude process before killing
@@ -1405,6 +1416,13 @@ function attachSessions(ctx) {
 
     // --- Move a single schedule to another project ---
     if (msg.type === "schedule_move") {
+      if (ws._clayUser) {
+        var schMovePerms = usersModule.getEffectivePermissions(ws._clayUser, osUsers);
+        if (!schMovePerms.scheduledTasks) {
+          sendTo(ws, { type: "error", text: "Scheduled tasks access is not permitted" });
+          return true;
+        }
+      }
       var moveResult = moveScheduleToProject(msg.recordId, msg.fromSlug, msg.toSlug);
       if (moveResult.ok) {
         // Re-broadcast updated records to this project's clients
diff --git a/test/ws-permission-gates-lr-eb1a.test.js b/test/ws-permission-gates-lr-eb1a.test.js
new file mode 100644
index 0000000..8022520
--- /dev/null
+++ b/test/ws-permission-gates-lr-eb1a.test.js
@@ -0,0 +1,259 @@
+"use strict";
+// Regression tests for lr-eb1a: three WS handlers lacked access-control gates.
+//
+// 3a. schedule_move: scheduledTasks permission required (was bypassed before
+//     project-user-message.js gate due to short-circuit in project-sessions.js)
+// 3b. set_session_visibility: canAccessSession required (sibling handlers
+//     already had this gate; set_session_visibility did not)
+// 3c. kill_process: admin-only in multi-user mode (isClaudeProcess check was
+//     sufficient in single-user but allowed cross-user SIGTERM in multi-user)
+//
+// All tests drive the real attachSessions handler from project-sessions.js.
+// Tests fail if the gates are removed.
+
+var test = require("node:test");
+var assert = require("node:assert/strict");
+
+var { attachSessions } = require("../lib/project-sessions");
+
+// ---------------------------------------------------------------------------
+// Shared ctx builder
+// ---------------------------------------------------------------------------
+
+function makeCtx(overrides) {
+  overrides = overrides || {};
+
+  var regularUser  = { id: "user-1", role: "user",  permissions: {} };
+  var adminUser    = { id: "user-2", role: "admin", permissions: { scheduledTasks: true } };
+  var otherSession = { localId: 99, ownerId: "user-9", sessionVisibility: "private" };
+  var wsSession    = { localId: 1,  ownerId: "user-1", sessionVisibility: "private" };
+
+  var killCalls = [];
+  var moveCalls = [];
+  var visCalls  = [];
+
+  var ctx = Object.assign({
+    cwd: "/tmp/test-eb1a", slug: "test", osUsers: false, currentVersion: "0.0.0",
+    sm: {
+      sessions: new Map([[1, wsSession], [99, otherSession]]),
+      getActiveSession: function() { return wsSession; },
+      broadcastSessionList: function() {},
+      setSessionVisibility: function(id, vis) { visCalls.push({ id: id, vis: vis }); return { ok: true }; },
+    },
+    sdk: {
+      stopTask: function() { return Promise.resolve(); },
+      isClaudeProcess: function() { return true; },  // always claims valid claude proc
+    },
+    tm: null, clients: [], opts: {},
+    send: function() {},
+    sendTo: function() {},
+    sendToAdmins: function() {},
+    sendToSession: function() {},
+    sendToSessionOthers: function() {},
+    usersModule: {
+      isMultiUser: function() { return true; },   // default: multi-user mode
+      canAccessSession: function(userId, session) {
+        // user can access their own session only
+        return session.ownerId === userId;
+      },
+      getUserPermission: function(user, perm) {
+        return user && user.permissions && !!user.permissions[perm];
+      },
+      // schedule_move uses getEffectivePermissions (returns permissions object)
+      getEffectivePermissions: function(user) {
+        return user ? (user.permissions || {}) : {};
+      },
+    },
+    userPresence: null, pushModule: null,
+    getSessionForWs: function(ws) { return ws._session || null; },
+    getLinuxUserForSession: function() { return null; },
+    ensureProjectAccessForSession: function() { return true; },
+    getOsUserInfoForWs: function() { return null; },
+    hydrateImageRefs: function(o) { return o; },
+    onProcessingChanged: function() {},
+    broadcastPresence: function() {},
+    adapter: null,
+    getProjectList: function() { return []; },
+    getProjectCount: function() { return 0; },
+    getScheduleCount: function() { return 0; },
+    moveScheduleToProject: function(args) { moveCalls.push(args); },
+  }, overrides);
+
+  return {
+    ctx: ctx,
+    regularUser: regularUser,
+    adminUser: adminUser,
+    wsSession: wsSession,
+    otherSession: otherSession,
+    killCalls: killCalls,
+    moveCalls: moveCalls,
+    visCalls: visCalls,
+  };
+}
+
+// ---------------------------------------------------------------------------
+// 3a — schedule_move: scheduledTasks permission gate
+// ---------------------------------------------------------------------------
+
+test("3a: schedule_move denied for user without scheduledTasks permission", function() {
+  var stub = makeCtx();
+  // regularUser has no scheduledTasks permission
+  stub.ctx.usersModule.getEffectivePermissions = function(user) {
+    return user && user.permissions ? user.permissions : {};
+  };
+  var errors = [];
+  stub.ctx.sendTo = function(ws, msg) { if (msg.type === "error") errors.push(msg); };
+
+  var h = attachSessions(stub.ctx);
+  var ws = { _session: stub.wsSession, _clayUser: stub.regularUser };  // regularUser: { permissions: {} }
+  h.handleSessionsMessage(ws, {
+    type: "schedule_move",
+    recordId: "sched-1",
+    fromSlug: "proj-1",
+    toSlug: "proj-2",
+  });
+
+  assert.equal(stub.moveCalls.length, 0,
+    "moveScheduleToProject must not be called without scheduledTasks permission");
+  assert.ok(errors.length > 0, "non-permitted user should receive an error");
+});
+
+test("3a: schedule_move allowed for user with scheduledTasks permission", function() {
+  var stub = makeCtx();
+  stub.ctx.usersModule.getEffectivePermissions = function(user) {
+    return user && user.permissions ? user.permissions : {};
+  };
+  var moveCalls = [];
+  stub.ctx.moveScheduleToProject = function() { moveCalls.push(true); return { ok: true }; };
+
+  // Stub getHubSchedules (used in the ok branch)
+  stub.ctx.getHubSchedules = function() { return []; };
+
+  var h = attachSessions(stub.ctx);
+  var ws = { _session: stub.wsSession, _clayUser: stub.adminUser };  // adminUser: { permissions: { scheduledTasks: true } }
+  h.handleSessionsMessage(ws, {
+    type: "schedule_move",
+    recordId: "sched-1",
+    fromSlug: "proj-1",
+    toSlug: "proj-2",
+  });
+
+  assert.equal(moveCalls.length, 1,
+    "moveScheduleToProject should be called when scheduledTasks permission is granted");
+});
+
+// ---------------------------------------------------------------------------
+// 3b — set_session_visibility: canAccessSession gate
+// ---------------------------------------------------------------------------
+
+test("3b: set_session_visibility denied for user who cannot access target session", function() {
+  var stub = makeCtx();
+  var errors = [];
+  stub.ctx.sendTo = function(ws, msg) { if (msg.type === "error") errors.push(msg); };
+  // regular user (user-1) trying to change otherSession (owned by user-9)
+  stub.ctx.usersModule.canAccessSession = function(userId, session) {
+    return session.ownerId === userId;
+  };
+
+  var h = attachSessions(stub.ctx);
+  var ws = { _session: stub.wsSession, _clayUser: stub.regularUser };
+  h.handleSessionsMessage(ws, {
+    type: "set_session_visibility",
+    sessionId: 99,         // otherSession.localId
+    visibility: "shared",
+  });
+
+  assert.equal(stub.visCalls.length, 0,
+    "setSessionVisibility must not be called for a session the user cannot access");
+});
+
+test("3b: set_session_visibility allowed for user who owns the session", function() {
+  var stub = makeCtx();
+  stub.ctx.usersModule.canAccessSession = function(userId, session) {
+    return session.ownerId === userId;
+  };
+
+  var h = attachSessions(stub.ctx);
+  var ws = { _session: stub.wsSession, _clayUser: stub.regularUser };
+  h.handleSessionsMessage(ws, {
+    type: "set_session_visibility",
+    sessionId: 1,          // wsSession.localId — owned by regularUser
+    visibility: "shared",
+  });
+
+  assert.equal(stub.visCalls.length, 1,
+    "setSessionVisibility should proceed when user owns the session");
+  assert.equal(stub.visCalls[0].vis, "shared");
+});
+
+// ---------------------------------------------------------------------------
+// 3c — kill_process: admin-only in multi-user mode
+// ---------------------------------------------------------------------------
+
+test("3c: kill_process denied for non-admin in multi-user mode", function() {
+  var killed = [];
+  var errors = [];
+  // Patch process.kill to spy without actually killing anything
+  var origKill = process.kill.bind(process);
+  process.kill = function(pid, sig) { killed.push({ pid: pid, sig: sig }); };
+
+  var stub = makeCtx();
+  stub.ctx.sendTo = function(ws, msg) { if (msg.type === "error") errors.push(msg); };
+
+  try {
+    var h = attachSessions(stub.ctx);
+    var ws = { _session: stub.wsSession, _clayUser: stub.regularUser };
+    h.handleSessionsMessage(ws, { type: "kill_process", pid: 99999 });
+
+    assert.equal(killed.length, 0,
+      "process.kill must not be called for non-admin in multi-user mode");
+    assert.ok(errors.length > 0,
+      "non-admin should receive an error response");
+  } finally {
+    process.kill = origKill;
+  }
+});
+
+test("3c: kill_process allowed for admin in multi-user mode", function() {
+  var killed = [];
+  var origKill = process.kill.bind(process);
+  process.kill = function(pid, sig) { killed.push({ pid: pid, sig: sig }); };
+
+  var stub = makeCtx();
+  stub.ctx.sdk.isClaudeProcess = function() { return true; };
+
+  try {
+    var h = attachSessions(stub.ctx);
+    var ws = { _session: stub.wsSession, _clayUser: stub.adminUser };
+    h.handleSessionsMessage(ws, { type: "kill_process", pid: 99999 });
+
+    assert.equal(killed.length, 1,
+      "process.kill should be called when admin issues kill_process");
+    assert.equal(killed[0].pid, 99999);
+    assert.equal(killed[0].sig, "SIGTERM");
+  } finally {
+    process.kill = origKill;
+  }
+});
+
+test("3c: kill_process allowed in single-user mode (no auth required)", function() {
+  var killed = [];
+  var origKill = process.kill.bind(process);
+  process.kill = function(pid, sig) { killed.push({ pid: pid, sig: sig }); };
+
+  var stub = makeCtx();
+  // Single-user mode
+  stub.ctx.usersModule.isMultiUser = function() { return false; };
+  stub.ctx.sdk.isClaudeProcess = function() { return true; };
+
+  try {
+    var h = attachSessions(stub.ctx);
+    var ws = { _session: stub.wsSession, _clayUser: stub.regularUser };
+    h.handleSessionsMessage(ws, { type: "kill_process", pid: 99999 });
+
+    assert.equal(killed.length, 1,
+      "kill_process should work without auth in single-user mode");
+  } finally {
+    process.kill = origKill;
+  }
+});