DB Networks has raised $4.5 million in Series B funding from Khosla Ventures for its security platform for real-time advanced database attack detection. The company uses behavior analysis technology to rapidly and automatically detect SQL injection attacks and denial of service attacks.

SQL injection is a code-injection technique that exploits a security vulnerability in an application’s software. Traditional security software uses black lists and white lists to prevent attacks. Apple has a white list of sorts. Apps that get approved for the iPhone are essentially put on a white list. Security software companies will keep black lists of IP addresses to protect their clients from attacks.

DB Networks looks for abnormalities in behavior to protect enterprise environments. The company’s Adaptive Database Firewall has a drop-in, transparent installation, which requires no database or application expertise and provides passive monitoring of all critical databases so dataflow between the application and the database is not compromised.

SQL attacks are on the rise with the advent of social networks. Hackers use sites like Facebook to spread malware that unsuspecting users then carry with them. Attacks happen when these hidden viruses get into enterprise networks.

DB Networks competes with a host of security vendors, including F-Secure, Symantec, McAfee and Trend Micro.