There’s a lot to consider when securing your cloud environment.
Threats range from malware to malicious attacks, and everything in between. With so many threats, a checklist of cloud security best practices will save you time.
First we’ll get a grounding in the top cloud security risks and some key considerations.
Understanding the risks involved in cloud computing is a key first step. The top 5 security risks in cloud computing are:
Less visibility means less control. Less control could lead to unauthorized practices going unnoticed.
Malware is malicious software, including viruses, ransomware, spyware, and others.
Breaches can lead to financial losses due to regulatory fines and compensation. They may also cause reputational damage.
The consequences of data loss can be severe, especially it includes customer information.
If cloud security measures aren't comprehensive, they can leave you vulnerable to cyberattacks.
Properly managing user access and privileges is a critical aspect of cloud infrastructure. Strong access controls mean only the right people can access sensitive data.
Implementing stringent security measures, such as firewalls, helps fortify your environment.
Encryption ensures that data is unreadable to unauthorized parties.
Compliance with industry regulations and data protection standards is crucial.
Regularly backing up your data helps reduce the impact of unforeseen incidents.
Security monitoring tools can proactively identify suspicious activities, and respond quickly.
Let’s take a look at these in more detail.
1a. Identify Sensitive Information
First, identify all your sensitive information. This data could range from customer information to patents, designs, and trade secrets.
1b. Understand Data Access and Sharing
Use access control measures, like role-based access control (RBAC), to manage data access. You should also understand and control how data is shared. One idea is to use data loss prevention (DLP) tools to prevent unauthorized data transfers.
1c. Explore Shadow IT
Shadow IT refers to using IT tools and services without your company’s approval. While these tools can be more productive or convenient, they can pose security risks.
Understanding the shared responsibility model in cloud security is essential. There are various models - IaaS, PaaS, or SaaS. Common CSPs include Microsoft Azure and AWS.
2a. Establish Visibility and Control
It’s important to establish strong visibility into your operations and endpoints. This includes understanding user activities, resource usage, and security events.
Using security tools gives you a centralized view of your secure cloud environment. You can even enable real-time monitoring and prompt responses to suspicious activities. Cloud Access Security Brokers (CASBs) or cloud-native security tools can be useful here.
2b. Ensure Compliance
Compliance with relevant laws and regulations is fundamental. This could range from data protection laws to industry-specific regulations.
2c. Incident Management
Despite your best efforts, security incidents can still occur. Having an incident response plan is a key element in managing the impact of any security events. This plan should tell team members how to respond to an incident.
Create clear policies around data protection in the cloud. These should cover areas such as data classification, encryption, and access control. These policies should align with your organizational objectives and comply with relevant regulations.
3a. Data Classification
You should categorize data based on its sensitivity and potential impact if breached. Typical classifications include public, internal, confidential, and restricted data.
3b. Data Encryption
Encryption protects your data in the cloud and on-premises. It involves converting your data so it can only be read by those who possess the decryption key. Your policy should mandate the use of strong encryption for sensitive data.
3c. Access Control
Each user should only have the access necessary to perform their job function and no more. Policies should include password policies and changes of workloads.
4a. User Identity Management
Identity and Access Management tools ensure only the right people access your data.
Using IAM rules is critical to controlling who has access to your cloud resources. These rules should be regularly updated.
4b. 2-Factor and Multi-Factor Authentication
Two-factor authentication (2FA) and multi-factor authentication (MFA) are useful tools. You reduce the risk by implementing 2FA or MFA, even if a password is compromised.
5a. Define Data Sharing Policies
Define clear data-sharing permissions. These policies should align with the principles of least privilege and need-to-know basis.
5b. Implement Data Loss Prevention (DLP) Measures
Data Loss Prevention (DLP) tools can help enforce data-sharing policies. These tools monitor and control data movements in your cloud environment.
5c. Audit and Review Data Sharing Activities
Regularly review and audit your data-sharing activities to ensure compliance. Audits help identify any inappropriate data sharing and provide insights for improvement.
Data encryption plays a pivotal role in safeguarding your sensitive information. It involves converting your data into a coded form that can only be read after it’s been decrypted.
6a. Protect Data at Rest
This involves transforming data into a scrambled form while it’s in storage. It ensures that even if your storage is compromised, the data remains unintelligible.
6b. Data Encryption in Transit
This ensures that your sensitive data remains secure while it’s being moved. This could be across the internet, over a network, or between components in a system.
6c. Key Management
Managing your encryption keys is just as important as encrypting the data itself. Keys should be stored securely and rotated regularly. Additionally, consider using hardware security modules (HSMs) for key storage.
6d. Choose Strong Encryption Algorithms
The strength of your encryption depends significantly on the algorithms you use. Choose well-established encryption algorithms. Advanced Encryption Standard (AES) or RSA are solid algorithms.
7a. Establish a Regular Backup Schedule
Install a regular backup schedule that fits your organization’s needs. The frequency of backups may depend on how often your data changes.
7b. Choose Suitable Backup Methods
You can choose from backup methods such as snapshots, replication, or traditional backups. Each method has its own benefits and limitations.
7c. Implement a Data Recovery Strategy
In addition to backing up your data, you need a solid strategy for restoring that data if a loss occurs. This includes determining recovery objectives.
7d. Test Your Backup and Recovery Plan
Regular testing is crucial to ensuring your backup and recovery plan works. Test different scenarios, such as recovering a single file or a whole system.
7e. Secure Your Backups
Backups can become cybercriminals’ targets, so they also need to be secured. This includes using encryption to protect backup data and implementing access controls.
Implementing robust malware protection measures is pivotal in data security. It’s important to maintain up-to-date malware protection and routinely scan your systems.
8a. Deploy Antimalware Software
Deploy antimalware software across your cloud environment. This software can detect, quarantine, and eliminate malware threats. Ensure the software you select can protect against a wide range of malware.
8b. Regularly Update Malware Definitions
Anti-malware relies on malware definitions. However, cybercriminals continuously create new malware variants, so these definitions become outdated quickly. Ensure your software is set to automatically update.
8c. Conduct Regular Malware Scans
Schedule regular malware scans to identify and mitigate threats promptly. This includes full system scans and real-time scanning.
8d. Implement a Malware Response Plan
Develop a comprehensive malware response plan to ensure you can address any threats. Train your staff on this plan to respond efficiently during a malware attack.
8e. Monitor for Anomalous Activity
Continuously monitor your systems for any anomalous activity. Early detection can significantly reduce the potential damage caused by malware.
9a. Develop a Regular Patching Schedule
Develop a consistent schedule for applying patches and updates to your cloud applications. For high-risk vulnerabilities, consider implementing patches as soon as they become available.
9b. Maintain an Inventory of Software and Systems
You need an accurate inventory of all software and systems to manage updates and patches. This inventory should include the system version, last update, and any known vulnerabilities.
9c. Automation Where Possible
Automating the patching process can help ensure that updates are applied consistently. Many cloud service providers offer tools or services that can automate patch management.
9d. Test Patches Before Deployment
Test updates in a controlled environment to ensure work as intended. This is especially important for patches to critical systems.
9e. Stay Informed About New Vulnerabilities and Patches
Keep abreast of new vulnerabilities and patches related to your software and systems. Being aware of the latest threats and solutions can help you respond faster.
9f. Update Security Tools and Configurations
Don’t forget to update your cloud security tools and configurations regularly. As your cloud environment evolves, your security needs may change.
10a. Set up cloud security assessments and audits
Establish a consistent schedule for conducting cybersecurity assessments and security audits. Audits are necessary to confirm that your security responsibilities align with your policies. These should examine configurations, security controls, data protection and incident response plans.
10b. Conduct Penetration Testing
Penetration testing is a proactive approach to identifying vulnerabilities in your cloud environment. These are designed to uncover potential weaknesses before malicious actors do.
10c. Perform Risk Assessments
These assessments should cover a variety of technical, procedural, and human risks. Use risk assessment results to prioritize your security efforts.
10d. Address Assessment Findings
After conducting an assessment or audit, review the findings and take appropriate action. It’s essential to communicate any changes effectively to all relevant personnel.
10f. Maintain Documentation
Keep thorough documentation of each assessment or audit. Include the scope, process, findings, and actions taken in response.
11a. Intrusion Detection
Establish intrusion detection systems (IDS) to monitor your cloud environment. IDSs operate by recognizing patterns or anomalies that could indicate unauthorized intrusions.
11b. Network Firewall
Firewalls are key components of network security. They serve as a barrier between secure internal network traffic and external networks.
11c. Security Logging
Implement extensive security logging across your cloud environment. Logs record the events that occur within your systems.
11d. Automate Security Alerts
Consider automating security alerts based on triggering events or anomalies in your logs. Automated alerts can ensure that your security team responds promptly.
11e. Implement Information Security and Event Management (SIEM) System
A Security Information and Event Management (SIEM) system can your cloud data. It can help identify patterns, security breaches, and generate alerts. It will give a holistic view of your security posture.
11f. Regular Review and Maintenance
Regularly review your monitoring and logging practices to ensure they remain effective. as your cloud environment and the threat landscape evolve.
12a. Regular Policy Reviews
Establish a schedule for regular review of your cloud security policies. Regular inspections allow for timely updates to keep your policies effective and relevant.
12b. Reactive Policy Adjustments
In response to emerging threats or incidents, it may be necessary to adjust on an as-needed basis. Reactive adjustments can help you respond to changes in the risk environment.
12c. Proactive Policy Adjustments
Proactive policy adjustments involve anticipating future changes and modifying your policies accordingly.
12d. Stakeholder Engagement
Engage relevant stakeholders in the policy review and adjustment process. This can include IT staff, security personnel, management, and even end-users. Different perspectives can provide valuable insights.
12e. Training and Communication
It's essential to communicate changes whenever you adjust your cloud security policies. Provide training if necessary to ensure everyone understands the updated policies.
12f. Documentation and Compliance
Document any policy adjustments and ensure they are in line with regulatory requirements. Updated documentation can serve as a reference for future reviews and adjustments.
Cloud security is a process, and using a checklist can help manage risks.
Companies like Prevasio specialize in managing cloud security risks and misconfigurations, providing protection and ensuring compliance. Secure your cloud environment today and keep your data protected against threats.