Within an organization, the possibility of a confidential information leak ranks among the highest fears of any executive. Detecting information leaks is a challenging problem, since most organizations depend on a broad and diverse communications network. It is not always straightforward to conclude which information is leaving the organization legitimately, and which communications are malicio...

Given (1) an architecture defined by processes and communication channels between them or with the environment, and (2) a specification on the messages transmitted over the channels, distributed synthesis aims at deciding existence of local programs, one for each process, that together meet the specification, whatever the environment does. Recent work shows that this problem can be solved when ...

Malware is a found to be a big threat in computing world. It continues to grow and evolve in complexity. Modern malware hide from static and dynamic analysis tools using advanced techniques. The existing system uses classification based and regression based approach for detection. The proposed system utilizes the classification based approach and regression based approach for detection for the ...

In cloud computing environments, multiple tenants are often co-located on the same multi-processor system. Thus, preventing information leakage between tenants is crucial. While the hypervisor enforces software isolation, shared hardware, such as the CPU cache or memory bus, can leak sensitive information. For security reasons, shared memory between tenants is typically disabled. Furthermore, t...

Based on the security of information transmission through network in the information society, the paper puts forward covert communication technology which is more reliable than the prior encryption algorithm, analyzes channel covertness and information hiding of covert communication technology based on spread-spectrum communication technology, and establishes a covert communication system inclu...

With increasing interest in multi-core systems, such as any communication infra-structures can become targets for information leakages via covert channel communication. Covert attacks lead to leaking secret and data. To design countermeasures against these threats, we need have good knowledge about classes of along with their properties. Temperature–based channel, known Thermal Channel (TCC), p...

In cloud computing environments, multiple tenants are often co-located on the same multi-processor system. Thus, preventing information leakage between tenants is crucial. While the hypervisor enforces software isolation, shared hardware, such as the CPU cache or memory bus, can leak sensitive information. For security reasons, shared memory between tenants is typically disabled. Furthermore, t...

A subliminal covert channel establishes a nearly undetectable communication session within a pre-established data stream between two separate entities.This document explains how HTTP can be utilized to facilitate a covert channel over both local and wide area networks. The Hypertext Transfer Protocol (HTTP) accounts for a majority of the Internet’s daily web traffic and is permitted within almo...

Simmons asked whether there exists a signature scheme with a broadband covert channel that does not require the sender to compromise the security of her signing key. We answer this question in the affirmative; the ElGamal signature scheme has such a channel. Thus, contrary to popular belief, the design of the DSA does not maximise the covert utility of its signatures, but minimises them. Our co...

To preserve confidentiality, information-flow control (IFC) restricts how untrusted code handles secret data. While promising, IFC systems are not perfect; they can still leak sensitive information via covert channels. In this work, we describe a novel exploit of lazy evaluation to reveal secrets in IFC systems. Specifically, we show that lazy evaluation might transport information through the ...