S3 source

This documentation includes enhancements introduced in version 1.17. If you are using an older version of Panther, please refer to the older variant of this documentation for support.

Set Up Permissions to Pull Data

The steps below will enable secure access for Panther to pull security logs from S3 bucket(s).

From Integrations, click Log Sources > Add Source > Data Transport > S3 Bucket

Step 1: Enter the Bucket Details






Friendly name of the S3 source

Account ID


The 12-digit AWS Account ID where the S3 buckets are located

Bucket Name


The S3 Bucket ID/name to onboard



If your data is encrypted using KMS-SSE, provide the ARN of the KMS key

S3 Prefix Filter & Log Types


The Log Types Panther should use to parse S3 objects matching the S3 Prefix Filter. At least one Log Type must be selected from the dropdown menu. S3 Prefix Filter may be left blank to allow ingestion of all files.

Click Next.

Step 2: Fill in an IAM role ARN

Panther needs an AWS IAM role with permissions to read objects from your s3 bucket. You may either use Panther's provided CloudFormation templates to create an IAM role or create the role yourself and fill in the role ARN in to Panther.

Creating an IAM role with Panther's CloudFormation template

The CloudFormation stack will create an AWS IAM role with the minimum required permissions to read objects from your S3 bucket. To deploy Panther's CloudFormation template, either click the Launch Console button, which will redirect you to the AWS console with the template URL pre-filled, or click Get template file to download the template and apply it through your own pipeline.

The "I want Panther to configure bucket notifications for me" checkbox enables you to allow Panther configure bucket notifications automatically. Panther uses S3 Event Notifications to get notified about new files added to your bucket. If you check the box, the provided CloudFormation template will add extra permissions to the IAM role, and Panther will be able to configure bucket notifications automatically for you (existing configurations will not be removed or overwritten). Otherwise, you will be prompted to configure bucket notifications manually, at a later step.

After the CloudFormation stack creation is complete, the role ARN will be visible in the Outputs of the stack.

Fill in the role ARN to Panther and click Continue Setup.

Creating an IAM role manually or with other automation

You may create the required IAM role manually or through your own automation, and just fill in the role ARN in Panther. Note, the IAM role policy must include at least the statements defined in the below policy:

"Version": "2012-10-17",
"Statement": [
"Action": ["s3:GetBucketLocation", "s3:ListBucket"],
"Resource": "arn:aws:s3:::<bucket-name>",
"Effect": "Allow"
"Action": "s3:GetObject",
"Resource": "arn:aws:s3:::<bucket-name>/*",
"Effect": "Allow"

When the IAM role is ready, fill in the role ARN to Panther and click Continue Setup.

Step 3: Configure bucket notifications and finish source setup

If you have opted in for Panther-managed notifications in step 2, you are done! Your S3 source is ready to ingest data and a success page is shown:

If you haven't opted in for Panther-managed notifications, follow the steps below to configure notifications for your S3 bucket.

Set Up Notifications of New Data

Now that Panther has the ability to pull log data, you need to configure your S3 buckets to send notifications when new data arrives.

We will configure the bucket to send notifications for new files to an SNS topic, which in turn will notify Panther's SQS queue.

Create SNS Topic

If you already have configured the bucket to send All object create events to an SNS topic, proceed to modify an existing SNS topic and subscribe it to Panther's input data queue.

First, create an SNS Topic and SNS Subscription to notify Panther that new data is ready for processing.

Log into the AWS Console of the account that owns the S3 bucket. Select the AWS Region where your S3 bucket is located, navigate to the CloudFormation console, and click on Create Stack (with new resources).

Under the Specify template section, enter the following Amazon S3 URL:


Specify the stack details below:



Stack name

A name of your choice, e.g. panther-log-processing-notifications-<bucket-label>


The 12 digit AWS Account ID where Panther is deployed


The region where Panther is deployed


The name of the SNS topic receiving the notification, by default this is panther-notifications-topic

Click on Next, Next, and then Create Stack.

This stack has one output named SnsTopicArn.

Modify an existing SNS topic

If you opted to create a new SNS topic in the previous step, skip this step and proceed to configure bucket notifications below.

Follow the steps below if you wish to use an existing topic for sending bucket notifications. Note that the SNS topic must be in the same region as your S3 bucket.

Modify SNS Access Policy

Create a subscription between your SNS topic and Panther's log processing SQS queue.

  1. Log into the AWS Console for the account where your S3 bucket exists

  2. Navigate to the SNS Console and select the SNS Topic currently receiving events

  3. Note the ARN of this SNS topic

  4. Select the Edit button and scroll down to the Access Policy card

  5. Add the statement shown below to the topic's Access Policy. Populate <PANTHER-MASTER-ACCOUNT-ID> with the 12-digit account ID where Panther is deployed - navigate to your Settings > General page in your Panther UI to obtain this ID. Populate SNS-TOPIC-ARN with the ARN you noted on step #3:

"Sid": "CrossAccountSubscription",
"Effect": "Allow",
"Principal": {
"AWS": "arn:aws:iam::<MasterAccountId>:root"
"Action": "sns:Subscribe",
"Resource": "<SNS-TOPIC-ARN>"

Create SNS Subscription

Finally, create the subscription to the Panther Master account's SQS queue.

From the SNS Console, select the Create subscription button:

  1. Protocol: Amazon SQS

  2. Endpoint: arn:aws:sqs:<PantherRegion>:<MasterAccountId>:panther-input-data-notifications-queue

  3. Select the Create subscription button

Configure Event Notifications on the bucket

With the SNS Topic created, the final step is to enable notifications from the S3 buckets.

Navigate to the AWS S3 Console, select the relevant bucket, and click the Properties tab.

From there, find the Event notifications card. Click + Create event notification and use the following settings:






All object create events

Send to

SNS Topic




(optional) limits notifications to objects with keys that end in matching characters


(optional) limits notifications to objects with keys that start with matching characters

Click Save.

That's it! Everything should be set up correctly and Panther can start processing new files arriving to your bucket.

Viewing Collected Logs

After log sources are configured, your data can be searched with the Data Analytics page!