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This work investigates the effectiveness of features from the spectral envelope such as the frequency and bandwidth of the first peak obtained from a 30th order Linear Predictive Coefficients (LPC) to identify pathological voices. Other spectral features are also investigated and tested to improve the recognition rate. The value of the Relative Power of the Periodic Component is combined with spectral...
Web applications are a fundamental pillar of today's globalized world. Society depends and relies on them for business and daily life. However, web applications are under constant attack by hackers that exploit their vulnerabilities to access valuable assets and disrupt business. Many studies and reports on web application security problems analyze the victim's perspective by detailing the vulnerabilities...
In this paper we propose a methodology to inject realistic attacks in Web applications. The methodology is based on the idea that by injecting realistic vulnerabilities in a Web application and attacking them automatically we can assess existing security mechanisms. To provide true to life results, this methodology relies on field studies of a large number of vulnerabilities in Web applications. The...
Writing secure Web applications is a complex task. In fact, a vast majority of Web applications are likely to have security vulnerabilities that can be exploited using simple tools like a common Web browser. This represents a great danger as the attacks may have disastrous consequences to organizations, harming their assets and reputation. To mitigate these vulnerabilities, security code inspections...
This paper describes a time attendance and access control system based in biometric technology and wireless communications, named Wireless Temp I/O. This system allows a multistation approach which records, in simultaneous, the time of entrance and exit of employees in each access to the work space. Besides the time record, the system allows to couple mechanical systems to control access that benefit...
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