I'm trying to set up a system in AWS that alerts me via email whenever an object is uploaded to my S3 bucket more frequently than expected, specifically less than 11 hours after the last upload. This is crucial for my security monitoring—I want to be on top of it in case someone unauthorized tries to upload a large amount of data.
Here's what I need:
- My S3 bucket usually gets backups every 12 hours.
- I want a notification if any upload happens less than 11 hours after the previous one.
- Every new upload should trigger this check in real-time.
- I'm looking for a cost-effective solution that requires minimal custom code.
- Ideally, I want to use AWS's built-in services if possible.
Is there a straightforward way to implement this using EventBridge, CloudWatch, or SNS without needing a complicated Lambda function to handle timestamps? I'm hoping for something as easy as the budget alerts AWS sends out. Thanks for any advice!
4 Answers
You could use a Lambda function that triggers on object uploads to check the timestamp against the last upload. If the new upload is less than 12 hours after the previous one, it can send an SNS notification. It sounds complex but it's actually pretty simple to set up!
Alternatively, you might want to ensure that your IAM permissions are tightly controlled. Automating a way to revoke upload permissions when not needed could prevent this issue before it even arises.
Don't shy away from using Lambdas—they're really powerful for tasks like this! You can write your logic once and let AWS handle the scaling.
Starting with S3 Event Notifications is a good move. You can set that up to trigger a Lambda function or send messages to EventBridge, where you could do further processing. Also, consider using tools like GuardDuty to monitor for unusual server behavior.
Absolutely! If your S3 uploads have predictable paths, that makes it even easier to track.