diff --git a/trustgraph-flow/trustgraph/direct/cassandra.py b/trustgraph-flow/trustgraph/direct/cassandra.py
index 568411a9..d06b270f 100644
--- a/trustgraph-flow/trustgraph/direct/cassandra.py
+++ b/trustgraph-flow/trustgraph/direct/cassandra.py
@@ -6,7 +6,7 @@ class TrustGraph:
 
     def __init__(
             self, hosts=None,
-            keyspace="trustgraph", table="default",
+            keyspace="trustgraph", table="default", username=None, password=None
     ):
 
         if hosts is None:
@@ -14,8 +14,13 @@ class TrustGraph:
 
         self.keyspace = keyspace
         self.table = table
+        self.username = username
             
-        self.cluster = Cluster(hosts)
+        if username and password:
+            auth_provider = PlainTextAuthProvider(username=username, password=password)
+            self.cluster = Cluster(hosts, auth_provider=auth_provider)
+        else:
+            self.cluster = Cluster(hosts)
         self.session = self.cluster.connect()
 
         self.init()
diff --git a/trustgraph-flow/trustgraph/query/triples/cassandra/service.py b/trustgraph-flow/trustgraph/query/triples/cassandra/service.py
index 4245784d..22fbf84d 100755
--- a/trustgraph-flow/trustgraph/query/triples/cassandra/service.py
+++ b/trustgraph-flow/trustgraph/query/triples/cassandra/service.py
@@ -26,6 +26,8 @@ class Processor(ConsumerProducer):
         output_queue = params.get("output_queue", default_output_queue)
         subscriber = params.get("subscriber", default_subscriber)
         graph_host = params.get("graph_host", default_graph_host)
+        graph_username = params.get("graph_username", None)
+        graph_password = params.get("graph_password", None)
 
         super(Processor, self).__init__(
             **params | {
@@ -35,10 +37,14 @@ class Processor(ConsumerProducer):
                 "input_schema": TriplesQueryRequest,
                 "output_schema": TriplesQueryResponse,
                 "graph_host": graph_host,
+                "graph_username": graph_username,
+                "graph_password": graph_password,
             }
         )
 
         self.graph_host = [graph_host]
+        self.username = graph_username
+        self.password = graph_password
         self.table = None
 
     def create_value(self, ent):
@@ -56,10 +62,17 @@ class Processor(ConsumerProducer):
             table = (v.user, v.collection)
 
             if table != self.table:
-                self.tg = TrustGraph(
-                    hosts=self.graph_host,
-                    keyspace=v.user, table=v.collection,
-                )
+                if self.username and self.password:
+                    self.tg = TrustGraph(
+                        hosts=self.graph_host,
+                        keyspace=v.user, table=v.collection,
+                        username=self.username, password=self.password
+                    )
+                else:
+                    self.tg = TrustGraph(
+                        hosts=self.graph_host,
+                        keyspace=v.user, table=v.collection,
+                    )
                 self.table = table
 
             # Sender-produced ID
@@ -176,6 +189,19 @@ class Processor(ConsumerProducer):
             default="localhost",
             help=f'Graph host (default: localhost)'
         )
+        
+        parser.add_argument(
+            '--graph-username',
+            default=None,
+            help=f'Cassandra username'
+        )
+        
+        parser.add_argument(
+            '--graph-password',
+            default=None,
+            help=f'Cassandra password'
+        )
+
 
 def run():
 
diff --git a/trustgraph-flow/trustgraph/storage/rows/cassandra/write.py b/trustgraph-flow/trustgraph/storage/rows/cassandra/write.py
index d44864fe..fc8f6686 100755
--- a/trustgraph-flow/trustgraph/storage/rows/cassandra/write.py
+++ b/trustgraph-flow/trustgraph/storage/rows/cassandra/write.py
@@ -29,6 +29,8 @@ class Processor(Consumer):
         input_queue = params.get("input_queue", default_input_queue)
         subscriber = params.get("subscriber", default_subscriber)
         graph_host = params.get("graph_host", default_graph_host)
+        graph_username = params.get("graph_username", None)
+        graph_password = params.get("graph_password", None)
 
         super(Processor, self).__init__(
             **params | {
@@ -36,10 +38,16 @@ class Processor(Consumer):
                 "subscriber": subscriber,
                 "input_schema": Rows,
                 "graph_host": graph_host,
+                "graph_username": graph_username,
+                "graph_password": graph_password,
             }
         )
-
-        self.cluster = Cluster(graph_host.split(","))
+        
+        if graph_username and graph_password:
+            auth_provider = PlainTextAuthProvider(username=graph_username, password=graph_password)
+            self.cluster = Cluster(graph_host.split(","), auth_provider=auth_provider)
+        else:
+            self.cluster = Cluster(graph_host.split(","))
         self.session = self.cluster.connect()
 
         self.tables = set()
@@ -120,6 +128,18 @@ class Processor(Consumer):
             default="localhost",
             help=f'Graph host (default: localhost)'
         )
+        
+        parser.add_argument(
+            '--graph-username',
+            default=None,
+            help=f'Cassandra username'
+        )
+        
+        parser.add_argument(
+            '--graph-password',
+            default=None,
+            help=f'Cassandra password'
+        )
 
 def run():
 
diff --git a/trustgraph-flow/trustgraph/storage/triples/cassandra/write.py b/trustgraph-flow/trustgraph/storage/triples/cassandra/write.py
index e7078e08..d940d0ec 100755
--- a/trustgraph-flow/trustgraph/storage/triples/cassandra/write.py
+++ b/trustgraph-flow/trustgraph/storage/triples/cassandra/write.py
@@ -28,6 +28,8 @@ class Processor(Consumer):
         input_queue = params.get("input_queue", default_input_queue)
         subscriber = params.get("subscriber", default_subscriber)
         graph_host = params.get("graph_host", default_graph_host)
+        graph_username = params.get("graph_username", None)
+        graph_password = params.get("graph_password", None)
 
         super(Processor, self).__init__(
             **params | {
@@ -35,10 +37,14 @@ class Processor(Consumer):
                 "subscriber": subscriber,
                 "input_schema": Triples,
                 "graph_host": graph_host,
+                "graph_username": graph_username,
+                "graph_password": graph_password,
             }
         )
-
+        
         self.graph_host = [graph_host]
+        self.username = graph_username
+        self.password = graph_password
         self.table = None
 
     def handle(self, msg):
@@ -52,10 +58,17 @@ class Processor(Consumer):
             self.tg = None
 
             try:
-                self.tg = TrustGraph(
-                    hosts=self.graph_host,
-                    keyspace=v.metadata.user, table=v.metadata.collection,
-                )
+                if self.username and self.password:
+                    self.tg = TrustGraph(
+                        hosts=self.graph_host,
+                        keyspace=v.metadata.user, table=v.metadata.collection,
+                        username=self.username, password=self.password
+                    )
+                else:
+                    self.tg = TrustGraph(
+                        hosts=self.graph_host,
+                        keyspace=v.metadata.user, table=v.metadata.collection,
+                    )
             except Exception as e:
                 print("Exception", e, flush=True)
                 time.sleep(1)
@@ -82,6 +95,18 @@ class Processor(Consumer):
             default="localhost",
             help=f'Graph host (default: localhost)'
         )
+        
+        parser.add_argument(
+            '--graph-username',
+            default=None,
+            help=f'Cassandra username'
+        )
+        
+        parser.add_argument(
+            '--graph-password',
+            default=None,
+            help=f'Cassandra password'
+        )
 
 def run():