Most attacks are from botnets. The goals: spreading spam, stealing data, spreading propaganda, and social-engineering consumers for profit.

Most attacks are from botnets. The goals: spreading spam, stealing data, spreading propaganda, and social-engineering consumers for profit.

Most attacks are from botnets. The goals: spreading spam, stealing data, spreading propaganda, and social-engineering consumers for profit.

A subset of customers for the company's Incapsula web application firewall had their email addresses, hashed/salted passwords, and more open to unauthorized access, Imperva announced.

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The issue impacts users of the vendor's Cloud WAF product.

Imperva, a leading provider of Internet firewall services that help Web sites block malicious cyberattacks, alerted customers on Tuesday that a recent data breach exposed email addresses, scrambled passwords, API keys and SSL certificates for a subset of its firewall users.

Redwood Shores, Calif.-based Imperva sells firewall technology designed to detect and block various types of malicious Web traffic, from denial-of-service attacks to digital probes aimed at undermining the security of Web-based software applications.