In some recent articles, the spoofing of Phasor measurement unit (PMU) GPS receiver has been highlighted as a threat to power grid protection system. Having spoofed PMU GPS signals, one can manipulate the measurements and inject bad data to power grid protection system. The previous anti spoofing methods are all based on GPS signal analysis. The mentioned methods are just able to detect spoofin...

Spoofing detection systems for automatic speaker verification have moved from only modelling voiced frames to modelling all speech frames. Unvoiced speech has been shown to carry information about spoofing attacks and anti-spoofing systems may further benefit by treating voiced and unvoiced speech differently. In this paper, we separate speech into low and high energy frames and independently m...

Spoofing attacks are threatening the global navigation satellite system (GNSS). The maximum likelihood estimation (MLE)-based positioning technique is a direct positioning method originally developed for multipath rejection and weak signal processing. We find this method also has a potential ability for GNSS anti-spoofing since a spoofing attack that misleads the positioning and timing result w...

By identifying weaknesses in TCP’s RFC specifications, Savage et al. are able to bypass TCP’s congestion control behaviours. They specifically demonstrate three techniques: ACK division, DupACK spoofing, and Optimistic ACKing. ACK division increases the sender’s transmission window artificially by ACKing at byte granularity rather than segment granularity. DupACK spoofing sends a stream of dupl...

3 Abstract TCP-based flooding attacks are a common form of Distributed Denial-of-Service 4 (DDoS) attacks which abuse network resources and can bring about serious threats to the Internet. 5 Incorporating IP spoofing makes it even more difficult to defend against such attacks. Among 6 different IP spoofing techniques, which include random spoofing, subnet spoofing and fixed 7 spoofing, subnet s...

Growing interest in automatic speaker verification (ASV) systems has lead to significant quality improvement of spoofing attacks on them. Many research works confirm that despite the low equal error rate (EER) ASV systems are still vulnerable to spoofing attacks. In this work we overview different acoustic feature spaces and classifiers to determine reliable and robust countermeasures against s...

Introduction/purpose: The paper provides a review of recent research in the field GPS and ADS-B spoofing. Systems that rely on satellite positioning technology can be targeted by spoofing order to generate incorrect positioning/timing, which is accomplished inserting false signals into "victim's" receiver. Attackers try insert information systems that, for example, provide navigation airplanes ...

Biometric systems are vulnerable to certain type of attacks at various points in the biometric model. A spoofing attack which is submitting a stolen, copied biometric trait to the sensor to gain unauthorized access to the biometric system is one among them. Multimodal biometric systems are designed to increase the accuracy of the biometric system, but they are more vulnerable to spoofing attack...

Nowadays spoofing detection is one of the priority research areas in the field of automatic speaker verification. The success of Automatic Speaker Verification Spoofing and Countermeasures (ASVspoof) Challenge 2015 confirmed the impressive perspective in detection of unforeseen spoofing trials based on speech synthesis and voice conversion techniques. However, there is a small number of researc...

Biometrics systems have significantly improved person identification and authentication, playing an important role in personal, national, and global security. However, these systems might be deceived (or “spoofed”).The recent advances in spoofing detection, current solutions often rely on S domain knowledge, specific biometric reading systems, and attack types. We assume a very limited knowledg...