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.
Avoid storing sensitive data / top secret files in the cloud, as a real privacy on internet is doubtful. d. Local Encryption of Data. Whenever choosing cloud storage services always look for one that offers local encryption for your data. This provides an additional layer of security. e. Cloud Service Provider.
Q5) (a) Password policy: SQL Server verification server login and secret key approach can apply. Login and secret word are not the same regarding security is extremely viable. SQL new businesses • SQL server administration studio gives three choices for the above logins • Implement secret key strategy • Keeping in mind the end goal to keep up the security of information, we can change the secret key or are made, when the need to put a touch befuddling. • at the point when the approach is empowered all the prerequisite ought to be meet • Eight characters ought to be in the secret word • The secret word must incorporate the capitalized letters (A –Z), lowercase letters (a-z), numbers (0-9), non-alphanumeric characters like outcry point (! ), at image (@), dollar ($) and so forth.
Which method does not involve password travel across the internet ? a) E commerce b) Manipulation system c) Challenge–response system d) Responce system Answer:c 8. In Assymmetric Encryption, a message encrypted with the Public Key only be decrypted with the receiver’s appropriate Private Key. Justify? a) Not true, the message can also be decrypted with the Public Key b) A so called “one way function with back door” is applied for the encryption c) The Public Key contains a special function which is used to encrypt the message and which can only be reversed by the appropriate Private Key d) The encrypted message contains the function for decryption which identifies the Private Key Answer:b 9.
Once you pay them they can demand even more and threaten you by sending lower degree virus as your files and system is under GPAA Ransomware control. How to remove GPAA ransomware from PC? Removing is the only way you can get rid of GPAA ransomware completely. We have provided some manual steps through which you can easily remove this computer virus from your PC. We concern your safety so we suggest you to get an anti-malware program that regularly scans your PC and remove such harmful virus automatically and keep your PC clean and also prevent you from future threats.
On trying to install the Windows 8.1 update file KB2919355, users will get the 80073b92 install error code. Even the installation of applications from the Windows Store can fail with the message that something had happened and the applications could not be installed. This vague message with the 80073b92 install exception code is a result of Windows registry having corrupted entries. If the registry has been infected with malware then users will see that they get the 80073b92 update error code on trying to install Windows updates. They will see that the installation of security updates like KB2160841 for .NET Framework 4 will keep on failing.
These are (Virtual Private Network) VPN Policy, Password Policy and Acceptable Use Policy. Acceptable Use Policy is a policy that outlines the acceptable use of computer equipment. This policy is in place to protect employees in regards to inappropriate use. Any case of inappropriate use can expose the network to several risks, including viruses. Passwords are the frontline of protection of user accounts.
All the three passwords are confidential to keep your account and money secured. When you are sending your username and password from your computer to bank server it should maintained confidentiality. No third party should be able to hack or share your information. There are few characteristics of confidentiality which are explained in detail as follows: i. Access Control Access control is a type of security technique which is used to identify an authorised user who can view or who will use resources for various data processing activities in a secured environment.
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
Spyware may get on to a computer in a number of ways. Spyware distributors sometimes use misleading or deceptive tactics to encourage users to install spyware, for instance, by displaying a fake message asking users to install software to fix an operating system problem. Spyware may be covertly installed on a computer connected to the Internet, which is inadequately secured. Often, spyware is included as a part of a larger software package installed by the user. The license agreement provided with the software may fail to indicate that spyware will be installed along with the main program.
Write privilege that allows a user to change something Execute privilege is that allows a user to create folders, files or set date. Software updating If you want to protect your computer from any malicious activities, therefore, you should update your computer security software regularly. It is very important to update a software security software because some weakness software may allow a hacker or viruses to gain access to your computer. Moreover, update a software can able to make your computer faster. If you do not update the security software that means there will be changes to get attacks by hackers and viruses so you should update a security software regularly.
All of the patches in the system that are have not been re-patched which leaves the system with vulnerabilities. This risk leaves the business system open for hackers to break in and access all of the companies’ personal information The businesses should make sure that all of the patches are re-patched to reduce risk of business Physical Security 7. Most of the companies and schools use cipher lock to restrict the access to the certain area of companies or school. The individuals who are not authorized can do shoulder surfing to gain access to the restricted areas. To reduce the risk, companies or schools should use multi authentication.
Such actions include sending TCP reset packets to the machine(s) which is being the target of attack, reconfiguring router/firewall in order to block the malicious connection. In extreme cases, to avoid potential damage to the firm IDS can even block all the network traffic. Passive response: IDS administrator gets the information from passive solutions about the current situation and leave the decision to take appropriate steps to his discretion.This kind of reactions are adopted by many commercial systems. Simple alarm messages and notifications are the examples for this kind of actions. Email, cellular phone or via SNMP messages can be used to send notifications.