Amazon Lambda Security and Microsoft Azure both possess different security requirements that may lead to confusion among security professionals. Yet there are multiple reasons for organizations to move towards serverless systems rather than away from them.
Experts tend to agree that serverless frameworks present additional security concerns that are difficult to manage manually. Yet these frameworks offer numerous security benefits and strategies for improving it.
Serverless security does not need to be complex if properly implemented. Due to potential dangers, businesses should explore employing innovative approaches and automating certain solutions.
What Is Serverless Computing?
Some refer to this form of computing as serverless computing; its proper name would be Functions as a Service (FaaS). Firms frequently discuss serverless computing using event-driven computing; thanks to cloud computing, businesses no longer require physical servers in order to run programs on them.
Cloud computing utilises virtual server machines. A serverless approach removes servers altogether to advance service components forward. In contrast, standard cloud services do not always necessitate servers or containers to run smoothly.
Event triggers on the other hand execute short functions to accomplish specific tasks, for instance sending emails instead of continuously running letter methods or sending letters via serverless letter methods.
Lambda from Amazon Web Services was the pioneer of serverless computing, now also available on Google Cloud Platform and Microsoft’s Azure public cloud (GCP). Open-source options are also available that enable you to set up private clouds without needing physical servers or the Kubernetes Docker container system.
Disadvantages Of Serverless Computing Solutions
Serverless computing offers businesses an innovative, more flexible approach to providing services, but necessitates new methods of deployment and management, which may present new risks. Businesses should carefully consider these serverless computing risks:
- Serverless Security at Provider Level: Serverless services depend on their provider’s infrastructure for running properly; which could or could not be secure.
- Multi-tenancy: Serverless services often rely on public infrastructure that runs code for multiple clients simultaneously, which could pose issues when dealing with confidential data.
- Injection Attacks: Unwanted content or data is added into a program without its author’s knowledge, often through serverless architecture events which then trigger attacks launched from within that function.
- Encryption: Serverless functions frequently interact with databases and other sensitive resources that contain private data that could be exposed if their connections were not encrypted.
Misconfigured Security: In order to access various resources, developers may include access keys, tokens, or passwords directly in their functions.
- Function Rights: While serverless functions often share the same rights as servers, serverless functions generally require only minimal permissions to perform their duties, as granting too many rights puts its existence in jeopardy.
- Component Flaws: Functions typically depend on an supply chain that includes third-party libraries or parts; exploiting any weaknesses found within these components may enable serverless capabilities to take advantage of a known weakness within them.
Techniques For Securing Serverless Computing Environments
Setting appropriate rules and regulations is the only way to guarantee serverless systems’ safety. Cloud security laws may apply to virtual computers with multiple servers in the Cloud, while serverless computing requires additional visibility or fine-grained control measures.
Reduce Serverless Permissions
One of the greatest difficulties associated with serverless computing is functions requiring more permissions than necessary. Granting everyone as few permissions as possible decreases attack surfaces significantly.
As part of the function creation process, automatic checks in staging settings may be enabled to reduce the number of permissions. By looking at how a function functions you can determine its privilege requirements. An administrator could use this data to restrict access and ensure only relevant rights are enabled.
All functions that interact with cloud services, whether part of one cloud service or not, require network access and proof to help manage risk. Administrators should follow best practices set forth by cloud providers for serverless authentication processes.
Utilize The Controls Offered By Your Service Provider
Cloud service providers also provide several built-in capabilities that assist consumers in identifying problems. For instance, those using Amazon Lambda might find AWS Trusted Advisor useful.
Utilize An Activity Log
As serverless functions were event-driven and stateless, they often ignored what was going on around them in real-time. Recording what happened may help identify potential threats.
Examine The Function Layers
An administrator could detect attempted injection and other undesirable behaviors by monitoring each level.
Consider Employing Third Party Security Software
Serverless computing often includes security features that protect only the platform on which services operate, although other tools and solutions can help manage and monitor serverless computing systems.
Evaluate what works well for your company to minimize any hazards from anything new and unproven, while reaping security advantages like visibility and granularity only available if appropriate tools and practices are utilized. Once this step has been taken, however, you’ll discover that their most secure applications were rebuilt using Lambda and API Gateway before receiving serverless security channels as needed.