added redis rule, modified from Titus project, and updated NOTICE file

NOTICE

@@ -3,7 +3,7 @@ NOTICE file corresponding to Section 4 (d) of the Apache License, Version 2.0
 --------------------------------------------------------------------
 Notices for Kingfisher
 --------------------------------------------------------------------
-Copyright 2025 MongoDB, Inc.
+Copyright 2025-2026 MongoDB, Inc.
 https://www.mongodb.com
 
 Source repository: https://github.com/mongodb/kingfisher
@@ -30,3 +30,29 @@ distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
+
+--------------------------------------------------------------------
+
+Some detection rules:
+ * data/rules/redis.yml
+
+are derived in part from Titus (https://github.com/praetorian-inc/titus),
+which is licensed under the Apache License, Version 2.0.
+
+Titus
+Copyright 2026 Praetorian Security, Inc.
+
+This product includes software developed at Praetorian Security, Inc.
+(https://www.praetorian.com/).
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

crates/kingfisher-rules/data/rules/redis.yml

@@ -0,0 +1,118 @@
+rules:
+  - id: kingfisher.redis.1
+    name: Redis URI Connection String
+    # Hyperscan-compatible pattern (no lookbehind)
+    # Host supports hostnames, IPv4, and IPv6 in brackets
+    pattern: |
+      (?xi)
+      (?: redis | rediss | redis\+sentinel ) ://                      (?# URI scheme )
+        (?: (?P<username>[a-zA-Z0-9%;._~!$&'()*+,;=-]{1,})            (?# username - optional )
+          :
+        )?
+        (?P<password>[a-zA-Z0-9%;._~!$&'()*+,;=/*+-]{8,})             (?# password - min 8 chars )
+      @ (?P<host>(?:\[[0-9a-fA-F:.]+\]|[a-zA-Z0-9_.-]+)) (?: :(?P<port>\d{1,5}))?  (?# host and optional port )
+      (?: / (?P<db>\d{1,2}))?                                         (?# optional database number )
+      \b
+
+    pattern_requirements:
+      min_digits: 1
+      ignore_if_contains:
+        - "****"
+        - "xxxx"
+        - "example.com"
+        - "your_password"
+        - "your-password"
+        - "changeme"
+        - "replaceme"
+        - ":password@"
+        - ":secret@"
+        - "localhost"
+        - "127.0.0.1"
+        - "# redis"
+        - "// redis"
+
+    min_entropy: 3.0
+    confidence: medium
+
+    examples:
+      - 'REDIS_URL="redis://user:EXAMPLEp4ssw0rd123@cache.prod.internal:6379/0"'
+      - 'rediss://admin:TESTsecur3K3y456@redis.cache.internal:6380/1'
+      - 'redis+sentinel://default:SAMPLEr3d1sK3y789@sentinel.cluster.local:26379'
+      - 'redis://:oJs3RjFV5CVDyObDiooJk8NGGSylGTlNmAzCaPVydjM=@gainazurecacheforredis03.eastus.redisenterprise.cache.azure.net:10000'
+      - 'redis://default:MyP4ss@192.168.1.10:6379/2'
+      - 'rediss://:token123@[::1]:6380/0'
+
+    references:
+      - https://redis.io/docs/latest/develop/clients/redis-py/connect/
+      - https://redis.io/docs/latest/commands/auth/
+      - https://github.com/redis/redis-py/blob/master/redis/client.py
+
+  - id: kingfisher.redis.2
+    name: Python Redis Client Debug Output
+    # Hyperscan-compatible pattern (no lookahead)
+    # "None" filtering moved to ignore_if_contains
+    pattern: |
+      (?xi)
+      redis\.(?:client\.Redis|connection\.(?:Connection|SSLConnection|ConnectionPool))  (?# Python Redis class )
+      .*?
+      (?:password|passwd|pwd)                                         (?# password key )
+      \s*=\s*                                                         (?# equals separator )
+      (?P<password>[a-zA-Z0-9+/=_-]{8,})                              (?# password value )
+      (?:,|\s)                                                        (?# separator )
+      .*?
+      host\s*=\s*                                                     (?# host key )
+      (?P<host>(?:\[[0-9a-fA-F:.]+\]|[a-zA-Z0-9_.-]+))                (?# host - hostname, IPv4, or IPv6 )
+
+    pattern_requirements:
+      min_digits: 1
+      ignore_if_contains:
+        - "password=None"
+        - "passwd=None"
+        - "pwd=None"
+
+    min_entropy: 3.0
+    confidence: medium
+    examples:
+      - '<redis.client.Redis(<redis.connection.ConnectionPool(<redis.connection.Connection(db=0,username=None,password=oJs3RjFV5CVDyObDiooJk8NGGSylGTlNmAzCaPVydjM=,host=gainazurecacheforredis03.eastus.redisenterprise.cache.azure.net,port=10000,...)>)>)>'
+      - '<redis.client.Redis(<redis.connection.ConnectionPool(<redis.connection.SSLConnection(db=0,password=EXAMPLEsecretKey123,host=redis-server.local,port=6379,...)>)>)>'
+    references:
+      - https://github.com/redis/redis-py
+      - https://redis.readthedocs.io/en/stable/connections.html
+
+  - id: kingfisher.redis.3
+    name: Redis Password (Standalone Config)
+    # Detects REDIS_PASSWORD, redis_password, redis.password etc. in env vars and config files
+    pattern: |
+      (?xi)
+      \b
+      (?:REDIS|redis)
+      [-_.]?
+      (?:PASSWORD|PASS|PASSWD|AUTH|SECRET|TOKEN)
+      \b
+      (?:.|[\n\r]){0,24}?
+      [=:\s]+
+      ['"]?
+      (?P<password>[a-zA-Z0-9%;._~!$&'()*+,;=/*+-]{8,})
+      ['"]?
+
+    pattern_requirements:
+      min_digits: 1
+      ignore_if_contains:
+        - "****"
+        - "xxxx"
+        - "your_password"
+        - "changeme"
+        - "replaceme"
+        - "example.com"
+        - "localhost"
+
+    min_entropy: 3.0
+    confidence: medium
+    examples:
+      - 'REDIS_PASSWORD="EXAMPLEp4ssw0rd123"'
+      - 'redis_password=MyS3cur3R3d1sK3y'
+      - "config.redis.auth = 'secretT0ken456'"
+      - 'REDIS_AUTH: "aB3cD4eF5gH6iJ7kL8"'
+    references:
+      - https://redis.io/docs/latest/commands/auth/
+      - https://redis.io/docs/latest/operate/oss_and_stack/management/security/