We present an operating system-level security model for controlling ne-grained programs, such as downloaded executable content, and compare this security model's implementation to that of language-based security models. Language-based security has wellknown limitations, such as the lack of complete mediation (e.g., for compiled programs or race condition attacks) and faulty self-protection (e e...

Power cable is widely used in Extra High Voltage (EHV), High Voltage (HV) transmission, Medium Voltage (MV) sub-transmission, and MV / Low Voltage (LV) distribution applications. Basically, the protection principles used for cable are similar with the ones for overhead transmission line. However, the inherent characteristics of cables make its fault behavior more complicate than that of transmi...

Distributed Denial of Service (DDoS) attackers typically use spoofed IP addresses to prevent exposing their identities and easy filtering of attack traffic. This paper introduces a novel mitigation scheme, TRAPS, whereby the victim verifies source address authenticity by performing reconfiguration for traffic redirection and informing high ongoing-traffic correspondents. The spoofed sources are...

The user interface level and implementation level protection mechanisms of the BirliX operating system are described and motivated. In BirliX, subject restriction and object protection are provided as complementary mechanisms to enforce security policies by building small domains of protection. Traceability is provided as basis for tracing back violations of policies t o answerable humans.

The aim of this work is to present some of the capabilities of a Semantically Intellectual Enhanced Property Protection System. The system has reached a prototype phase where experiments are possible. It uses an extensive semantic net algorithms for Polish language that enable it to detect similarities in two compared documents on a level far beyond simple text matching. SEIPro2S benefits both ...

Importance measures are being widely used in risk-informed applications to characterize the importance of component failures, human errors, common cause failures, etc. In order to decrease the impact of external factors and increase the system survivability, a multilevel protection is applied to its components or subsystems. Each level of protection can have multiple states from perfect protect...

From time to time a sequence of unexpected and overlapping contingencies may lead to power system angular instability and even blackouts if not addressed adequately by means of an out-of-step (OOS) protection system. The motivation of the paper is an attempt to develop a workable prototype of the OOS protection system. The deficiencies of the protection currently used in the Latvian Power Syste...