What is Vulnerability Scanning

Vulnerability scanning is the automated process of scanning software,network or hardware for security weakness that can be exploited by threat actor.This includes common software bugs,misconfiguration,outdated patches and more. Vulnerability scanning tools typically have a database of known threats and CVE database to identify issues.Some vulnerability scanning tools in the market can also perform penetration testing.

On-Premise Vulnerability Scanning

On-premise vulnerability scanning refers to the security tools that are deployed and maintained by a company’s IT infrastructure.Vulnerability scanning tools run of internal servers or machines and companies can perform vulnerability scanning from their own environment. In simple,everything will be running on the company’s hardware on-premise.

Pros of On-premise Vulnerability Scanning

✅More Customization: With on-premise vulnerability scanning, organizations have full authority over the configuration, implementation, and operation of the vulnerability scanner. This will be highly beneficial for organizations with highly sensitive environments, such as stock markets, government agencies, etc.

✅Not dependent on the Internet: On-premise vulnerability scanning doesn’t rely on an Internet connection, meaning vulnerability scans can be performed without the Internet or limited connectivity. This can be a significant advantage in isolated environments.

✅Performance:As the solution is hosted within the organization’s infrastructure,they don’t have to worry about latency,downtime or availability.Here the performance solely depends on the local network and hardware.

Cons of On-premise Vulnerability Scanning

❌High Initial Cost: One of the biggest cons of on-premise vulnerability scanning is the cost. Organizations during initial phase needs to purchase software, hardware and build specialized team to manage and maintain the system.This can be expensive for organizations with limited IT resources.

❌Limited Scalability:As organizations grows, the number of digital assets, systems and endpoints also increases,scaling on-premise vulnerability scanning solutions can become challenging and resource intensive. Scaling up requires additional resources such as hardwares,licenses, and personnel,necessitating significant investment. Without scaling up, it becomes harder for security teams to perform regular vulnerability scanning.

❌Complex to integrate:On-premise solutions are complex and hard to integrate with other security systems, like firewalls, intrusion detection systems, and SIEM (Security Information and Event Management) tools.

Cloud-Based Vulnerability Scanning

Cloud-based vulnerability scanning are hosted in cloud and offered asSoftware-as-a-Service (SaaS) product to the customers.These solutions often run of the infrastructure of third party cloud service providers (like AWS, Azure, or Google Cloud) and managed entirely by the service provider.

Pros of Cloud-Based Vulnerability Scanning

✅Cost-effective: Cloud-based vulnerability scanning solutions operate on a subscription model, therefore it reduces the huge upfront costs needed to set up infrastructure. This can be helpful for small and medium-sized businesses (SMBs) that can’t spend huge costs on setting infrastructure for on-premise vulnerability scanning. The pay-as-you-go model also saves costs for the organization, as they only pay for the scanning they need.

Related Reading:Vulnerability Scanning for Small Businesses: A Practical Approach

✅Scalability: Cloud-based vulnerability scanning offers easier scalability. As your organization grows,you can easily scale up the vulnerability scanning without worrying about hardware limitations or software upgrades or budget.Moreover,data storage is not a problem for organizations. 

✅Distributed workforce support:With an increasing remote and hybrid workforce,cloud-based vulnerability solutions that allow organizations to scan application and network,at any time when needed.

Cons of Cloud-Based Vulnerability Scanning

❌Data privacy concerns:Since vulnerability data is processed and stored in cloud infrastructure, some sensitive organizations may have concerns on sharing and storing data with third-party vendors. Moreover, encryption keys are regulated and managed by third-party and users don’t enjoy full ownership over their data.

❌Internet Dependency: Cloud-based vulnerability scanning requires a fast and stable internet connection. If there is any downtime or issues, vulnerability scanning can be delayed.

❌Latency: Even though cloud providers have the capacity to handle high volumes of data, sometimes cloud-based vulnerability scanning may experience latency or slower scanning compared to on-premise solutions.

On-premise vs. cloud-based vulnerability scanning: which is better?

Choosing between on-premise and cloud-based vulnerability scanning depends on a various factors, such as organization’s size, security needs, compliance, resources and budget.

  • Small to Medium Businesses(SMBs):Cloud-based vulnerability scanning is suitable for SMBs due to its affordability, scalability, and ease of use. These businesses can’t maintain complex on-premise solutions and allow them to scale up without huge investments in infrastructure or staff.
  • Large Enterprises: Large organizations with complex and sensitive data may prefer on-premise vulnerability scanning for full control and privacy. However, they may also consider hybrid solutions, for example, cloud-based scanning for external-facing systems and on-premise solutions for internal systems.
  • Highly Regulated Industries: Organizations in highly regulated sectors, such as government contractors, banks, etc, may lean towards on-premise vulnerability scanning due to privacy concerns.

Conclusion

There is no answer to the question which is better on-premise or cloud-based vulnerability scanning.The decision solely depends on an organization’s needs,budget and risk tolerance.For business that need scalability and flexibility without significant investment cloud-based ​​vulnerability scanning tend to be the best choice.For businesses that require full control on data,on-premise vulnerability scanning may be considered.