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Security scanners can get quite detailed and current picture of the current state of information security systems. Minimum, provide such scanners – it is an opportunity to assess the current security level, while more advanced versions – and the tools to address identified vulnerabilities in local area networks and information systems. But despite the proliferation of security analysis, many companies (Especially from small and medium businesses) are neglected opportunity to increase the level of information security (or rather, do not use these funds, or, if used, it is ineffective). Studies show that more than 80% of successful network attacks are carried out using long-known vulnerabilities for which have already been issued so-called "patches" or "patches." Endless security breaches Today the share of Web applications growing rapidly, along with this growing and active hackers who break into these applications. Recent studies show that about 70 percent of corporate websites contain serious security breaches that You can find a simple free vulnerability scanners. But such problems with information security will inevitably increase the interest in them from hackers. In the course of this study was scanned about 3200 Web sites which found more than 210,000 vulnerabilities. And this is an average of about 66 security vulnerabilities for each Web site, ranging from the potentially serious, such as SQL-injection and cross site scripting, and ending with relatively minor, such as easily accessible for listing lists katalogov.Oblasti application vulnerability scanners to identify problems in information security vulnerability scanners are looking for weaknesses and vulnerabilities in information systems using databases that are constantly updated and supplemented by vendors. They fall about unsafe code in applications, incorrect (in terms of information security) settings and systems necessary updates and patches.