Virtual Patching is a term not only web-application specific but mainly used by WAF providers over the past years. It is also referred as External Patching or Just-in-time Patching. It is a technique of fixing a retardant by fixing or eliminating a vulnerability by dominant either the inputs to its application through an external application, shim, proxy, or virtual server.

A quick repair job for a piece of software code is  called a patch. The virtual patch works once the security enforcement layer analyses transactions and intercepts attacks in transit, therefore the malicious traffic never gets to the web application. The impact of virtual patching is that without updating the source code, it prevents an exploit from occurring.

Safeguarding the company’s assets against existing and emerging vulnerabilities is the most critical task that security teams are struggling with. Various tools are used to achieve Deep Security virtual patching. The WAF provides the most sustainable solution for virtual patching. WAF works well in securing your websites and applications.

Prophaze automatically deploys virtual patching to web applications, APIs and microservices to block malicious traffic from exploiting vulnerabilities, before the application source code can be modified. Considering the many situations when organizations can’t immediately modify the source code, makes the value of virtual patching significant.

  • Patching is scalable and implemented on all hosts
  • Does not conflict with libraries and support code file
  • Eliminates time and money spent on emergency patching
  • Protects mission-critical systems that cannot be taken offline
  • Reduces risk until a vendor-supplied patch is released and tested
  • Enables agile CI/CD teams to remediate vulnerabilities and release code without stopping productions.


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Importance of Virtual Patching