diff --git a/prisma/migrations/15_add_share/migration.sql b/prisma/migrations/15_add_share/migration.sql
index d9f1e7cf..3971b54c 100644
--- a/prisma/migrations/15_add_share/migration.sql
+++ b/prisma/migrations/15_add_share/migration.sql
@@ -3,6 +3,7 @@ CREATE TABLE "share" (
     "share_id" UUID NOT NULL,
     "entity_id" UUID NOT NULL,
     "share_type" INTEGER NOT NULL,
+    "name" VARCHAR(200) NOT NULL,
     "slug" VARCHAR(100) NOT NULL,
     "parameters" JSONB NOT NULL,
     "created_at" TIMESTAMPTZ(6) DEFAULT CURRENT_TIMESTAMP,
@@ -21,9 +22,10 @@ CREATE UNIQUE INDEX "share_slug_key" ON "share"("slug");
 CREATE INDEX "share_entity_id_idx" ON "share"("entity_id");
 
 -- MigrateData
-INSERT INTO "share" (share_id, entity_id, share_type, slug, parameters, created_at)
+INSERT INTO "share" (share_id, entity_id, name, share_type, slug, parameters, created_at)
 SELECT gen_random_uuid(),
        website_id,
+       name,
        1,
        share_id,
        '{}'::jsonb,
diff --git a/prisma/schema.prisma b/prisma/schema.prisma
index 4da35406..e58ebd0b 100644
--- a/prisma/schema.prisma
+++ b/prisma/schema.prisma
@@ -342,6 +342,7 @@ model Board {
 model Share {
   id         String    @id() @map("share_id") @db.Uuid
   entityId   String    @map("entity_id") @db.Uuid
+  name       String    @db.VarChar(200)
   shareType  Int       @map("share_type") @db.Integer
   slug       String    @unique() @db.VarChar(100)
   parameters Json
diff --git a/src/app/(main)/admin/users/UserAddForm.tsx b/src/app/(main)/admin/users/UserAddForm.tsx
index 6c365510..84b8399c 100644
--- a/src/app/(main)/admin/users/UserAddForm.tsx
+++ b/src/app/(main)/admin/users/UserAddForm.tsx
@@ -10,6 +10,7 @@ import {
   TextField,
 } from '@umami/react-zen';
 import { useMessages, useUpdateQuery } from '@/components/hooks';
+import { messages } from '@/components/messages';
 import { ROLES } from '@/lib/constants';
 
 export function UserAddForm({ onSave, onClose }) {
@@ -37,7 +38,10 @@ export function UserAddForm({ onSave, onClose }) {
       <FormField
         label={formatMessage(labels.password)}
         name="password"
-        rules={{ required: formatMessage(labels.required) }}
+        rules={{
+          required: formatMessage(labels.required),
+          minLength: { value: 8, message: formatMessage(messages.minPasswordLength, { n: '8' }) },
+        }}
       >
         <PasswordField autoComplete="new-password" data-test="input-password" />
       </FormField>
diff --git a/src/app/api/auth/logout/route.ts b/src/app/api/auth/logout/route.ts
index 7bf0a813..153f1f52 100644
--- a/src/app/api/auth/logout/route.ts
+++ b/src/app/api/auth/logout/route.ts
@@ -1,7 +1,14 @@
 import redis from '@/lib/redis';
+import { parseRequest } from '@/lib/request';
 import { ok } from '@/lib/response';
 
 export async function POST(request: Request) {
+  const { error } = await parseRequest(request);
+
+  if (error) {
+    return error();
+  }
+
   if (redis.enabled) {
     const token = request.headers.get('authorization')?.split(' ')?.[1];
 
diff --git a/src/app/api/auth/sso/route.ts b/src/app/api/auth/sso/route.ts
index bba3dde3..f8222869 100644
--- a/src/app/api/auth/sso/route.ts
+++ b/src/app/api/auth/sso/route.ts
@@ -1,7 +1,7 @@
 import { saveAuth } from '@/lib/auth';
 import redis from '@/lib/redis';
 import { parseRequest } from '@/lib/request';
-import { json } from '@/lib/response';
+import { json, serverError } from '@/lib/response';
 
 export async function POST(request: Request) {
   const { auth, error } = await parseRequest(request);
@@ -10,9 +10,13 @@ export async function POST(request: Request) {
     return error();
   }
 
-  if (redis.enabled) {
-    const token = await saveAuth({ userId: auth.user.id }, 86400);
-
-    return json({ user: auth.user, token });
+  if (!redis.enabled) {
+    return serverError({
+      message: 'Redis is disabled',
+    });
   }
+
+  const token = await saveAuth({ userId: auth.user.id }, 86400);
+
+  return json({ user: auth.user, token });
 }
diff --git a/src/app/api/users/[userId]/route.ts b/src/app/api/users/[userId]/route.ts
index aade8aa8..e642fe3c 100644
--- a/src/app/api/users/[userId]/route.ts
+++ b/src/app/api/users/[userId]/route.ts
@@ -1,7 +1,7 @@
 import { z } from 'zod';
 import { hashPassword } from '@/lib/password';
 import { parseRequest } from '@/lib/request';
-import { badRequest, json, ok, unauthorized } from '@/lib/response';
+import { badRequest, json, notFound, ok, unauthorized } from '@/lib/response';
 import { userRoleParam } from '@/lib/schema';
 import { canDeleteUser, canUpdateUser, canViewUser } from '@/permissions';
 import { deleteUser, getUser, getUserByUsername, updateUser } from '@/queries/prisma';
@@ -27,7 +27,7 @@ export async function GET(request: Request, { params }: { params: Promise<{ user
 export async function POST(request: Request, { params }: { params: Promise<{ userId: string }> }) {
   const schema = z.object({
     username: z.string().max(255).optional(),
-    password: z.string().max(255).optional(),
+    password: z.string().min(8).max(255).optional(),
     role: userRoleParam.optional(),
   });
 
@@ -47,6 +47,10 @@ export async function POST(request: Request, { params }: { params: Promise<{ use
 
   const user = await getUser(userId);
 
+  if (!user) {
+    return notFound();
+  }
+
   const data: any = {};
 
   if (password) {
diff --git a/src/app/api/users/route.ts b/src/app/api/users/route.ts
index dbb114cf..4335c33f 100644
--- a/src/app/api/users/route.ts
+++ b/src/app/api/users/route.ts
@@ -4,6 +4,7 @@ import { uuid } from '@/lib/crypto';
 import { hashPassword } from '@/lib/password';
 import { parseRequest } from '@/lib/request';
 import { badRequest, json, unauthorized } from '@/lib/response';
+import { userRoleParam } from '@/lib/schema';
 import { canCreateUser } from '@/permissions';
 import { createUser, getUserByUsername } from '@/queries/prisma';
 
@@ -11,8 +12,8 @@ export async function POST(request: Request) {
   const schema = z.object({
     id: z.uuid().optional(),
     username: z.string().max(255),
-    password: z.string(),
-    role: z.string().regex(/admin|user|view-only/i),
+    password: z.string().min(8).max(255),
+    role: userRoleParam,
   });
 
   const { auth, body, error } = await parseRequest(request, schema);
diff --git a/src/app/api/websites/[websiteId]/segments/route.ts b/src/app/api/websites/[websiteId]/segments/route.ts
index 45927656..10d47a81 100644
--- a/src/app/api/websites/[websiteId]/segments/route.ts
+++ b/src/app/api/websites/[websiteId]/segments/route.ts
@@ -2,7 +2,7 @@ import { z } from 'zod';
 import { uuid } from '@/lib/crypto';
 import { getQueryFilters, parseRequest } from '@/lib/request';
 import { json, unauthorized } from '@/lib/response';
-import { anyObjectParam, searchParams, segmentTypeParam } from '@/lib/schema';
+import { searchParams, segmentParametersSchema, segmentTypeParam } from '@/lib/schema';
 import { canUpdateWebsite, canViewWebsite } from '@/permissions';
 import { createSegment, getWebsiteSegments } from '@/queries/prisma';
 
@@ -42,7 +42,7 @@ export async function POST(
   const schema = z.object({
     type: segmentTypeParam,
     name: z.string().max(200),
-    parameters: anyObjectParam,
+    parameters: segmentParametersSchema,
   });
 
   const { auth, body, error } = await parseRequest(request, schema);
diff --git a/src/lib/auth.ts b/src/lib/auth.ts
index ba6d8b09..832dfb60 100644
--- a/src/lib/auth.ts
+++ b/src/lib/auth.ts
@@ -1,7 +1,6 @@
 import debug from 'debug';
 import { ROLE_PERMISSIONS, ROLES, SHARE_TOKEN_HEADER } from '@/lib/constants';
-import { secret } from '@/lib/crypto';
-import { getRandomChars } from '@/lib/generate';
+import { createAuthKey, secret } from '@/lib/crypto';
 import { createSecureToken, parseSecureToken, parseToken } from '@/lib/jwt';
 import redis from '@/lib/redis';
 import { ensureArray } from '@/lib/utils';
@@ -53,7 +52,7 @@ export async function checkAuth(request: Request) {
 }
 
 export async function saveAuth(data: any, expire = 0) {
-  const authKey = `auth:${getRandomChars(32)}`;
+  const authKey = `auth:${createAuthKey()}`;
 
   if (redis.enabled) {
     await redis.client.set(authKey, data);
diff --git a/src/lib/crypto.ts b/src/lib/crypto.ts
index a6d912b8..ee4c977f 100644
--- a/src/lib/crypto.ts
+++ b/src/lib/crypto.ts
@@ -63,3 +63,7 @@ export function uuid(...args: any) {
 
   return process.env.USE_UUIDV7 ? v7() : v4();
 }
+
+export function createAuthKey() {
+  return crypto.randomBytes(16).toString('hex');
+}
diff --git a/src/lib/schema.ts b/src/lib/schema.ts
index c860cee8..addce3a2 100644
--- a/src/lib/schema.ts
+++ b/src/lib/schema.ts
@@ -104,6 +104,23 @@ export const reportTypeParam = z.enum([
   'utm',
 ]);
 
+export const operatorParam = z.enum([
+  'eq',
+  'neq',
+  's',
+  'ns',
+  'c',
+  'dnc',
+  't',
+  'f',
+  'gt',
+  'lt',
+  'gte',
+  'lte',
+  'bf',
+  'af',
+]);
+
 export const goalReportSchema = z.object({
   type: z.literal('goal'),
   parameters: z
@@ -157,7 +174,7 @@ export const retentionReportSchema = z.object({
   parameters: z.object({
     startDate: z.coerce.date(),
     endDate: z.coerce.date(),
-    timezone: z.string().optional(),
+    timezone: timezoneParam.optional(),
   }),
 });
 
@@ -175,7 +192,7 @@ export const revenueReportSchema = z.object({
     startDate: z.coerce.date(),
     endDate: z.coerce.date(),
     unit: unitParam.optional(),
-    timezone: z.string().optional(),
+    timezone: timezoneParam.optional(),
     currency: z.string(),
   }),
 });
@@ -231,3 +248,22 @@ export const reportResultSchema = z.intersection(
 );
 
 export const segmentTypeParam = z.enum(['segment', 'cohort']);
+
+export const segmentParametersSchema = z.object({
+  filters: z
+    .array(
+      z.object({
+        name: z.string(),
+        operator: operatorParam,
+        value: z.string(),
+      }),
+    )
+    .optional(),
+  dateRange: z.string().optional(),
+  action: z
+    .object({
+      type: z.string(),
+      value: z.string(),
+    })
+    .optional(),
+});
diff --git a/src/permissions/team.ts b/src/permissions/team.ts
index 0f07c1a4..784dbe4b 100644
--- a/src/permissions/team.ts
+++ b/src/permissions/team.ts
@@ -16,7 +16,7 @@ export async function canCreateTeam({ user }: Auth) {
     return true;
   }
 
-  return !!user;
+  return hasPermission(user.role, PERMISSIONS.teamCreate);
 }
 
 export async function canUpdateTeam({ user }: Auth, teamId: string) {
diff --git a/src/queries/prisma/user.ts b/src/queries/prisma/user.ts
index 14376fc2..467ea1e0 100644
--- a/src/queries/prisma/user.ts
+++ b/src/queries/prisma/user.ts
@@ -18,7 +18,7 @@ async function findUser(criteria: Prisma.UserFindUniqueArgs, options: GetUserOpt
     ...criteria,
     where: {
       ...criteria.where,
-      ...(showDeleted && { deletedAt: null }),
+      ...(showDeleted ? {} : { deletedAt: null }),
     },
     select: {
       id: true,