Web Application Firewall (WAF)

Protect Your Critical Web Applications and Data

Your web applications are under siege. Cyber-criminals attack around the clock, steal data, disrupt access, and compromise website credentials to commit further fraud. Next generation firewalls, Intrusion Prevention Systems and other traditional network security controls don’t stop the latest industrialized, multi-vector attacks, leaving your organization exposed to costly and damaging breaches and downtime. Web Application Security solutions from Imperva enable you to prevent breaches and downtime by protecting your data where it’s accessed – your web applications – securing them against web attacks, DDoS, site scraping, and fraud.

Our Web Application Firewall (WAF) analyzes all user access to your business-critical web applications and protects your applications and data from cyber attacks. WAF dynamically learns your applications’ “normal” behavior and correlates this with the threat intelligence crowd-sourced from around the world and updated in real time to deliver superior protection.
The industry leading WAF identifies and acts upon dangers maliciously woven into innocent-looking website traffic; traffic that slips right through traditional defenses. This includes blocking technical attacks such as SQL injection, cross-site scripting and remote file inclusion that exploit vulnerabilities in web applications; business logic attacks such as site scraping and comment spam; botnets and DDoS attacks; and preventing account takeover attempts in real-time, before fraudulent transactions can be performed.


Key Features


Our WAF Solution uses patented Dynamic Application Profiling to learn all aspects of web applications, including the directories, URLs, parameters, and acceptable user inputs to detect attacks with exceptional accuracy and block only bad parties, while eliminating impact to legitimate customers. SecureSphere WAF mitigates both technical attacks such as DDoS and SQL injection, as well as non-technical attacks such as comment spamming and site scraping.


Our WAF distinguishes attacks from unusual, but legitimate, behavior by correlating web requests across security layers and over time. SecureSphere Correlated Attack Validation capability examines multiple attributes such as HTTP protocol conformance, profile violations, signatures, special characters, and user reputation, to accurately alert on or block attacks with the lowest rate of false positives in the industry.


Our WAF can be deployed as a physical or virtual appliance on-premises, and as a virtual image on Amazon Web Services or Microsoft Azure or completely cloud-based service that require zero software & hardware. Physical appliance deployments are particularly flexible in that they allow SecureSphere WAF to run transparently, requiring virtually no changes to the customer’s network. And granular policy controls enable superior accuracy and unequaled control to match each organization’s specific protection requirements.


To protect against today’s well resourced cyber-criminals, it is vital to have an advanced warning system that is aware of and protects against constantly evolving web-based attacks. The WAF solution is updated with real-time threat intelligence crowd-sourced from around the world and curated by our Vendor's Application Defense Center. This provides better protection, improves WAF accuracy, and makes the security team more efficient by proactively filtering traffic from known bad sources so the security team can focus on what is really important. The following intelligence feeds are available:

  • Reputation Services: Filters traffic based upon latest, real-time reputation of source
  • Community Defense: Adds unique threat intelligence crowd-sourced from Imperva users
  • Bot Protection: Detects botnet clients and application DDoS attacks
  • Account Takeover Protection: Protects website user accounts from attack and takeover
  • Fraud Prevention: Simplifies deployment of best-in-class partner fraud prevention solutions
  • Emergency Feed: Delivers latest signatures right away to mitigate against zero-day vulnerabilities instead of delivering them through periodic updates


Our WAF can perform “virtual patching” for your web applications via vulnerability scanner integration. Instead of leaving a web application exposed to attack for weeks or months while code is modified after discovering a vulnerability, virtual patching actively protects web applications from attacks to reduce the window of exposure, and decreases the costs of emergency fix cycles until you are able to patch them.


Our WAF rich graphical reporting capabilities enable customers to easily understand security status and meet regulatory compliance. Our WAF provides both pre-defined and fully-customizable reports. This enables you to quickly assess your security status and streamline demonstration of compliance with PCI, SOX, HIPAA and FISMA and other compliance standards.


Our WAF can easily integrates with most of the leading Security Information and Event Management (SIEM) systems such as Splunk, ArcSight, RSA enVision and others. Our WAF exports events as syslog messages in Common Event Format (CEF) and JSON format. Our WAF events in any SIEM are intuitively indexed and are easily searchable for quick incident response.

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