--- title: Amazon S3 Security Best Practices - Cloud Storage Security Amazon S3 description: Keeping your S3 Cloud secure is critical for cloud data security. Amazon S3 Malware Security is a shared responsibility. Begin S3 malware scanning now. image: https://cloudstoragesecurity.com/hubfs/Blog%20Images/Featured%20Images/amazon%20s3%20best%20security%20practices%20featured%20image.webp --- ###### [BLOG](https://cloudstoragesecurity.com/news) Jul 29, 2020 | 2 min read # Amazon S3 Security Best Practices [Cloud Storage Security](https://cloudstoragesecurity.com/news/author/cloud-storage-security) ##### Share: ![fb-icon](https://cloudstoragesecurity.com/hubfs/fb-icon.svg) [![insta-icon](https://cloudstoragesecurity.com/hubfs/insta-icon.svg) ](https://www.instagram.com/) ![twit-icon](https://cloudstoragesecurity.com/hubfs/twit-icon.svg) [![YouTube Icon](https://cloudstoragesecurity.com/hubfs/youtube-icon.svg) ](https://www.youtube.com/@cloudstoragesecurity7887) ![amazon S3 security best practices featured image](https://cloudstoragesecurity.com/hs-fs/hubfs/Blog%20Images/Featured%20Images/amazon%20s3%20best%20security%20practices%20featured%20image.webp?width=820&height=547&name=amazon%20s3%20best%20security%20practices%20featured%20image.webp) The Shared Responsibility Model for Object Storage As malware attack vectors continue to grow and more and more security features are built above and below the delineation of “Security of the Cloud” (provided by AWS) and “Security in the Cloud” (your job), security teams will need to ensure a proper framework to protect their applications and data. ![AWS_Shared_Responsibility_Model](https://cloudstoragesecurity.com/hs-fs/hubfs/AWS_Shared_Responsibility_Model.jpg?width=1212&name=AWS_Shared_Responsibility_Model.jpg) The Shared Responsibility Model helps identify the reduced operational burden for public Cloud customers, however, it is solely your role to protect all customer data and corporate data. Here are some initial preventative practices to ensure your buckets, your data and your applications are safe. It is essential you ensure consistent cloud security controls and procedures across all account groups, users and roles. In addition, performing regular reviews of your written security framework will ensure the proper security controls and policy to keep your data and applications safe. **Ensure proper and correct Amazon S3 policies**. Bucket permissions policy is set to private by default, however, only buckets that require public access to be exposed using [Amazon S3 block public access](https://docs.aws.amazon.com/AmazonS3/latest/dev/access-control-block-public-access.html). The Amazon S3 Block Public Access feature provides settings for access points, buckets, and accounts to help you manage public access to Amazon S3 resources. **Scan for malware and viruses.** You should be scanning any buckets that are exposed to the public and specifically allow unknown third parties to write to your Amazon S3. In addition, outbound files should be scanned to ensure your customers and corporate applications are not at risk. It is your responsibility to keep your data lake free of malware. A free trial of [Antivirus for Amazon S3](https://cloudstoragesecurity.com/aws-antivirus) is available on the [AWS Marketplace](https://aws.amazon.com/marketplace/pp/B089QBV2GC). **Least Privilege access.** Only the minimal permissions should be granted to Amazon S3 resources using a multi-factor IAM. **Encryption is paramount.** All data at rest and in transit should be encrypted. Encrypt, encrypt, encrypt. Get the point? **Enable Amazon S3 cross-region replication** to extend your data across greater geographic zones. **Leverage AWS native tools** like [CloudTrail](https://aws.amazon.com/cloudtrail/) data events and [CloudWatch](https://aws.amazon.com/cloudwatch/) alerting and logging. **Establish data lifecycle policies.** It ensures data will ultimately age out and keep costs down. Computer malware and viruses are rampant and an everyday fact of doing business. Historically malware has been delivered through email, web or even file sharing through network shares. The threat has evolved to include a new attack vector of uploading files to cloud storage. Users and applications have come to rely on public cloud to provide storage for critical business data. Cloud Storage Security [Antivirus for Amazon S3](https://cloudstoragesecurity.com/aws-antivirus) protects Amazon S3 storage. Leveraging a consistent, written security framework will keep your object storage, files and applications safe from malicious intent and the hidden threats within Amazon S3.     ##### Share: ![fb-icon](https://cloudstoragesecurity.com/hubfs/fb-icon.svg) [![insta-icon](https://cloudstoragesecurity.com/hubfs/insta-icon.svg) ](https://www.instagram.com/) ![twit-icon](https://cloudstoragesecurity.com/hubfs/twit-icon.svg) [![YouTube Icon](https://cloudstoragesecurity.com/hubfs/youtube-icon.svg) ](https://www.youtube.com/@cloudstoragesecurity7887) ## Continue Reading [``` (String: poka soc2 compliance image) ``` ![poka soc2 compliance image](https://cloudstoragesecurity.com/hs-fs/hubfs/Website/Featured_Images/poka%20soc2%20compliance%20featured%20image.webp?width=387&height=258&name=poka%20soc2%20compliance%20featured%20image.webp) ](https://cloudstoragesecurity.com/news/2021/06/09/poka-case-study) Jun 9, 2021 ##### Poka Meets SOC 2 Compliance Requirements Customer Challenge Poka's connected worker platform for manufacturers leverages Amazon to store a variety of training content and user uploaded files that are then shared with downstream users as part... [Cloud Storage Security](https://cloudstoragesecurity.com/news/author/cloud-storage-security) ##### [ Read now ](https://cloudstoragesecurity.com/news/2021/06/09/poka-case-study) [``` (String: Malware protection for Amazon Elastic File System with Cloud Storage Security inside an AWS account) ``` ![Malware protection for Amazon Elastic File System with Cloud Storage Security inside an AWS account](https://cloudstoragesecurity.com/hs-fs/hubfs/Copy%20of%20Blue%20White%20Gradient%20Modern%20Professional%20Business%20General%20LinkedIn%20Banner%20(750%20x%20750%20px)%20(1920%20x%201080%20px)%20(18).png?width=387&height=258&name=Copy%20of%20Blue%20White%20Gradient%20Modern%20Professional%20Business%20General%20LinkedIn%20Banner%20(750%20x%20750%20px)%20(1920%20x%201080%20px)%20(18).png) ](https://cloudstoragesecurity.com/news/malware-protection-for-amazon-efs-with-cloud-storage-security) Nov 4, 2025 ##### Proactive Malware Protection for Amazon EFS with Cloud Storage Security TL:DR Cloud Storage Security brings malware protection to Amazon EFS by scanning files in place inside your AWS account with multiple engines. You can schedule or run on demand scans, apply tag quaran... [Cloud Storage Security](https://cloudstoragesecurity.com/news/author/cloud-storage-security) ##### [ Read now ](https://cloudstoragesecurity.com/news/malware-protection-for-amazon-efs-with-cloud-storage-security) [``` (String: ) ``` ![Blog related post card image](https://cloudstoragesecurity.com/hs-fs/hubfs/CSS%20Webinar%20Thumbnails%20(750%20x%20750%20px)%20(7).png?width=387&height=258&name=CSS%20Webinar%20Thumbnails%20(750%20x%20750%20px)%20(7).png) ](https://cloudstoragesecurity.com/news/enhancing-amazon-s3-security) Jun 26, 2025 ##### Strengthen Amazon S3 Security with Advanced Controls & Antivirus The typical enterprise organization stores high volumes of data in cloud storage services such as Amazon S3– with much of this data being sensitive or otherwise business critical in nature. Particular... [Cloud Storage Security](https://cloudstoragesecurity.com/news/author/cloud-storage-security) ##### [ Read now ](https://cloudstoragesecurity.com/news/enhancing-amazon-s3-security) ![angled bg image](https://cloudstoragesecurity.com/hubfs/Website/Website_On_Page_Graphics/angled%20bg%20image.svg) ## Tired of Reading? Want to watch something instead? [ Check out our videos ](https://cloudstoragesecurity.com/webinars) ![watch video blog cta image 614x261](https://cloudstoragesecurity.com/hs-fs/hubfs/Website/Website_On_Page_Graphics/watch%20video%20blog%20cta%20image%20614x261.webp?width=614&height=261&name=watch%20video%20blog%20cta%20image%20614x261.webp) ![](https://px.ads.linkedin.com/collect/?pid=2428282&fmt=gif)