Setting file permissions is a form of DAC because it is the owner’s discretion. Configuring as many security layers as the user can will ensure the server will stay secure. Not all OS are 100% secure, but they can be configured to make it very hard for a hacker to
Different for external attackers, they can be hackers/crackers, saboteurs and thieves. If the network is compromised, intruders can attack or misuse the system. One common technique used by intruders to gain unauthorized access to the system is password theft. That is why, the users should be aware of information security which by not simply sharing their password with others and not leave their computer unprotected. It will gives the opportunities for unauthorized
It is the technique to hide secret message inside a carrier file and is later extracted by its intended receiver. Steganography takes cryptography a step further by hiding an encrypted message so that no one suspects it exists. So any intruder scanning the files in ideal condition can never know about existence of the message. As nobody except the sender and the receiver knows the existence of the message, it does not attract unwanted attention. Information security has two techniques: cryptography and steganography.
INTRODUCTION Data mining extracts hidden and useful information from the data. Valid, previously unknown, useful and high quality knowledge is discovered by data mining. Outlier detection is an important task in data mining. Outlier detection has many important applications and deserves more attention from data mining community. Outlier detection is an important branch in data pre-processing and data mining, as this stage is required in elaboration and mining of data coming from many application fields such as industrial processes, transportation, ecology, public safety, climatology.
On development of science and technology, the network technique is more and more advance and important. A lot of malware has appeared on the Internet. Malware is described some unsafe software, such as computer viruses, Trojan horses and spywares. Recently, it uses in order to invade any computer. Malware is exploited by hackers and governments to steal personal, financial or state secrets.
INTRODUCTION STEGANOGRAPHY Steganography is an art of hiding data inside data. Steganography is a form of security technique which is used to hide secret messages in various types of files, including digital images, audio and video. It is very old way of hiding secret data, but it changes a lot with the introduction of new technologies. There are many techniques available today for hiding secret data. For hiding in different cover media, there are different techniques.
Abstract “Cybercrimes and cyber criminals seem to be everywhere now and Taking cyber security seriously could mean the difference between Business success and failure”. The purpose of this paper is to find out the reasons for increase and ways of detecting and preventing cybercrime in businesses. Cybercrime is a fast-growing area of crime. More and more criminals are exploiting the speed, convenience and anonymity of the Internet to commit a diverse range of criminal activities that knows no borders, either physical or virtual. There are many ways and means of preventing cybercrime which includes education and training of staff and securing company digital assets.
Abstract : Steganography is the methodology in science that involves communicating secret data in an appropriate multimedia carrier for e.g. video, audio and image files. Audio steganography hides data in a audio signal which is a cover signal without any modification in that cover signal. Generally, Steganography concept is confused with other technique such as cryptography and watermarking, but objectives such as imperceptibility, capacity of hidden data and robustness draws thin line between them. The prime goal of steganography is to reliably send hidden information secretly, and not to reveal its presence. In this paper audio steganography (part of technical steganography) algorithm will be implemented on FPGA board to improve performance
What is cryptography? Cryptography is the study of utilizing science to encode and unscramble information. Cryptography empowers you to store delicate data or transmit it crosswise over frail systems (like the Web) so it can't be perused by anybody aside from the expected beneficiary.
CHALLENGES OF PROLIFERATION BIOMETRIC TECHNOLOGY Despite the numerous benefits of deployment of biometric technology to identification systems, it major disadvantage is that it is prone to vulnerabilities attacks either at the user interface or between modules or on the database template. Some of these attacks (Anthony & Mary, 2011)are highlighted as follow: Replay attacks Spoofing Tampering Substitution attacks Trojan Horse attacks Overriding yes/no Masquerade attack
It is risky. Hackers could steal such passwords without your knowledge. You should rather install a reputable password manager to remember your passwords. 4. Don’t use the same password for all your online accounts.
Misuse detection is used to identify previously known attacks for which they require before hand knowledge of attack signature. the disadvantage of this method is that prior knowledge of the attack is required and hence new attacks cannot be identified until new attacks signature have been developed for them. In anomaly detection system monitors activity to detect any significant deviation from normal user behavior compared to known user standard behavior, this type of intrusion detection can effectively protect against both well known and new attacks since no prior knowledge about intrusion is required. One of the most significant aspects of Intrusion Detection System is the use of Artificial Intelligence techniques to train the IDS about possible threats and gather information about the various traffic patterns to infer rules based on these patterns to distinguish between to differentiate between normal and intrusive
The Patriot Act and similar amendments passed in countries all over the world increased the demand for services, which redirect your traffic through a proxy server & encrypt it to prevent other internet users and even your ISP from spying on you. All for instance your ISP is able to see is that you established an encrypted connection to a server, nothing more. Using a proxy server is not completely secure, though. To communicate with your desired server providing the website you want to visit, the proxy has to decrypt your traffic and thus the internet provider of the proxy server is able to see the unencrypted data stream. This can be avoided by chaining proxies together or by simply using a service like Tor which redirects your traffic through 3 proxies, so called "nodes".
Thumb-drives can have devastating effects when connected to a network. They make the governments system vulnerable to viruses, malware, and other threats that can compromise the security of sensitive information. Also, thumb-drives or devices like them make it extremely easy to obtain data that should not be removed from government computers. This again gives the government a reasonable interest in the protection of “their” property to search these personally used
Network Security refers to any activities that take place to protect the network; more likely to protect the usability, reliability, integrity, and safety of the network and data. Targeting the threats and stopping them to enter or spread on the network is the job of effective network security. Most common threats for any computer networks are: • Viruses, worms, and Trojan horses • Spyware and adware • Hacker attacks • Identity theft • Data interception To prevent these threats, multiple layers of security need to be implemented so if one fails, other stand. Anti-virus, anti-spyware, firewall are some of the components of network security system used to block unauthorized access to the network and Virtual Private Network (VPNs), to provide