We present CoCoSpot, a novel approach to recognize botnet command and control channels solely based on traffic analysis features, namely carrier protocol distinction, message length sequences and encoding differences. Thus, CoCoSpot can deal with obfuscated and encrypted C&C protocols and complements current methods to fingerprint and recognize botnet C&C channels. Using average-linkage hierarc...

(English) Botnets are generally recognized as one of the most challenging threats on the Internet today. Botnets have been involved in many attacks targeting multinational organizations and even nationwide internet services. As more effective detection and mitigation approaches are proposed by security researchers, botnet developers are employing new techniques for evasion. It is not surprising...

abstract—today, botnets have become a serious threat to enterprise networks. by creation of network of bots, they launch several attacks, distributed denial of service attacks (ddos) on networks is a sample of such attacks. such attacks with the occupation of system resources, have proven to be an effective method of denying network services. botnets that launch http packet flood attacks agains...

Spam accounts for a large portion of the email exchange on the Internet. In addition to being a nuisance and a waste of costly resources, spam is used as a delivery mechanism for many criminal scams and large-scale compromises. Most of this spam is sent using botnets, which are often rented for a fee to criminal organizations. Even though there has been a considerable corpus of research focused...

An introduction to the key topics and challenges in Botnet, buffer overflow vulnerability, privacy-preserving and others.

Botnets, consisting of thousands of interconnected, remote-controlled computers, pose a big threat against the Internet. We have witnessed the involvement of such malicious infrastructures in politically motivated attacks more than once in recent years. Classical countermeasures are mostly reactive and conducted as part of incident response actions. This is often not sufficient. We argue that p...

ABSTRACT : With the rapid development of information technology, internet has affect the people in all aspects such as public utilities, telecommunication, financial transaction and defense system, all depends on information technology and their security. The widespread deployment of new technologies had maximized the use of internet to a great extent. But at the same time, the potential attack...

“Botnet” is a network of computers that are compromised and controlled by an attacker. Botnets are one of the most serious threats to today’s Internet. Most current botnets have centralized command and control (C&C) architecture. However, peer-to-peer (P2P) structured botnets have gradually emerged as a new advanced form of botnets. Without C&C servers, P2P botnets are more resilient to defense...

To early detect and defend the threats in the Internet caused by botnet, darknet monitoring is very important to understand various botnet activities. However, common illegal accesses by ordinary malwares makes such detection difficult. In this paper, in order to remove such accesses by ordinary malwares from the results of network monitoring, we propose a data screening method based on finding...