They are viruses, Spyware, Trojan and worms. Virus is a self infection by copying other normal file malware, infected files can be utilized to remove the virus after return to normal, there are some infected files cannot be cleared. At this time recommended to delete the file, reinstall the application. According to the author Kirby explains spyware - just like a spy, a hacker uses spyware to track internet activities and steal people’s information and also install backdoors in user computers without people being conscious of it (Kirby, 2015). The user's private data and important information will be the backdoor acquisition; even these "backdoor" can allow hackers to remotely manipulate the user's computer.
They know what they are searching for and somehow know how to retrieves and circumvent intrusion detection systems. 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.
Public key cryptography is an asymmetric method that use a pair of keys for encryption: a public key which is used to encrypt data, and private, or secret key is used to decryption. It requires that a person must have a pair of public key and private key. The public key is distributed in the open so that anyone wishing to communicate with that in a secure way than he can use the receiver’s public key to convert the plaintext into cipher text. This cipher text cannot be converted into same plaintext using same public key. Therefore, there is no issue if some other person knows about public key.
), the password better avoid for common personal information such as date of birth, last name or pet's name or dictionary words, else will lead to hacker easy to hack in. To avoid for the hackers misuse other people 's credit card for online transaction like stock trade via Internet, online shopping. The solution is pre-victim should always review bank and credit card statement. This is because can catch it in shorter time when the credit card data is stolen then can immediately report to the bank service and credit card companies for anything of the account was out of the ordinary. Other than that, people should practice safe online shopping, such as look for trustmark like McAfee SECURE ™ to inform the site whether is
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.
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. While cryptography is the study of securing information, cryptanalysis is the study of examining and breaking secure correspondence. Established cryptanalysis includes a fascinating mix of systematic thinking, use of numerical instruments, example discovering, tolerance, determination, and good fortune.
Even when the text file and key both get hacked or interpreted by third party user it will open up text file which does not contain actual secret message until he knows what actually an Algorithm used he can’t retrieve the original secret message. This protects the data from being invisible and hence be secure during transmission. The user at receiving end uses an Algorithm of code to retrieve the actual secret message from the cover text using Matrix file as key. Key words: Steganography, cryptography, cover text 1. INTRODUCTION Steganography is the art or practice of concealing a message, image, or file within another message, image, or file.
JPEG IMAGE STEGANALYSIS USING MACHINE LEARNING Abstract—This project deals with detection of steganography content. Steganography is the additional method in cryptography which helps to hide the coded message inside pictures, audio or videos. To hide the message is important but to reveal such content is more important to avoid usage by criminals. This project applies an approach of supervised machine learning to detect the presence of steganographic content coded by programs like Steghide in the images. Keywords—Steganography, Stego-images, Cover-images, Steganalysis.
This widespread, coordinated criminal effort is enabled by a plethora of vulnerabilities of the Internet, browsers, operating systems, and applications that are easily exploited by cybercrime techniques. Cybercriminals have found that compromising employee endpoints is a far simpler path into the corporate network than directly attacking networks. Unpatched “zero-day” vulnerabilities allow cybercriminals to secretly install malware on employee endpoint devices and essentially gain the same level of access to the corporate network, applications, and data that employees
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 Over time biometric encryption is used as a solution to biometric security threat(Cavoukian & Stoianov, 2007),(Jain, Nandakumar, & Nagar, 2008). Biometric encryption is either symmetric or asymmetric. The process in which a single key is used for the purpose of encryption and decryption is known symmetric encryption. Whereas, asymmetric encryption involves the use of two different but related keys-the encryption key, and decryption key However, some Information Communication Technology experts have criticised the fact that several agencies are deploying biometric technology in their operations.
You should rather install a reputable password manager to remember your passwords. 4. Don’t use the same password for all your online accounts. It is risky. Online criminals and hackers could potentially gain access to all your accounts if they figure out such password.
At least one character should be a Digit. 4. Symbols and Non alphabetic characters. Reversible Encryption: This is the setting present, when selected it allows the operating system to store the password using reversible encryption which helps to prevent the theft of the password and access to the hackers. Lockout Policy: This is the policy created by Windows to prevent the hackers from hacking the computer system.
Secret code is applied to the message and hashed and is sent to the receiver 6. Secret code is applied to the message and hashed and this hashed message is encrypted and sent to the receiver. It is used in digital signatures the hash is encrypted using sender’s private key and then encrypted using public key and sent to the receiver and the receiver decrypts the message using the private key. It is used in password storage A good system does not store the plaintext equivalent but store something else which include some randomness .so now if we use hash and because of its onewayness it is impossible to get back the password. If we use pure hash in the password and encrypt it, it can be broken easily by exhaustive search so that is why we have add some randomness to the password before the hash function is applied.
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
There are many steps that someone can take to prevent themselves from identity theft. One of the most important steps is making sure that your social security number is always locked away somewhere and that no one know your number. Another important step is being conscious to scams over the phone and Internet. Never give your personal information to an unsolicited request. Scammers may give phone calls and send out emails with false prize winnings and request your personal information to complete the transaction.