Computer Security

3 assests of computer system

-hardware

-software

-printer

Answer: Data encryption is the process of scrambling stored or transmitted information so that it is unintelligible until it is unscrambled by the intended recipient. Historically, data encryption has been used primarily to protect diplomatic and military secrets from foreign governments. It is also now used increasingly by the financial industry to protect money transfers, by merchants to protect credit-card information in electronic commerce, and by corporations to secure sensitive communications of proprietary information. Encryption systems are often grouped into families. Common families include symmetric systems (e.g. AES) and asymmetric systems (e.g. RSA), or may be grouped according to the central algorithm used (e.g. elliptic curve cryptography). As each of these is of a different level of cryptographic complexity, it is usual to have different key sizes for the same level of security, depending upon the algorithm used. For example, the security available with a 1024-bit key using asymmetric RSA is considered approximately equal in security to an 80-bit key in a symmetric algorithm (Source: RSA Security). The actual degree of security achieved over time varies, as more computational power and more powerful mathematical analytic methods become available. For this reason cryptologists tend to look at indicators that an algorithm or key length shows signs of potential vulnerability, to move to longer key sizes or more difficult algorithms. For example as of May 2007, a 1039 bit integer was factored, with the special number field sieve using 400 computers over 11 months. The factored number was of a special form; the special number field sieve cannot be used on RSA keys. The computation is roughly equivalent to breaking a 700 bit RSA key. However, this might be an advanced warning that 1024 bit RSA used in secure online commerce should be deprecated, since they may become breakable in the near future. Cryptography professor Arjen Lenstra observed that "Last time, it took nine years for us to generalize from a special to a non-special, hard-to-factor number" and when asked whether 1024-bit RSA keys are dead, said: "The answer to that question is an unqualified yes 64 bit encryption indicates that the size of the key used to encrypt the messageis 64 bits. The 64-bit encryption standard was used in some early Internet and wireless communication encryption algorithms such as DES and WEP. Unfortunately, 64-bit encryption has proven too easy to decipher or crack in practice. Now, 128-bit encryption (in 3DES or TDES) have replaced the 64-bit encryption keys (DES).

Symmetric-key algorithms are a class of algorithms for cryptography that use trivially related, often identical, cryptographic keys for both decryption and encryption.

Mahak NAfish

DNA computing, also known as molecular computing, is a new approach to massively parallel computation based on groundbreaking work by Adleman . In November of 1994, Dr. Leonard Adleman wrote the first paper on DNA computing. In this paper, he found a way to solve the "Hamiltonian path problem," which involves finding all the possible paths between a certain number of vertices. It is also known as the "traveling salesman problem." This name comes from viewing each vertex as a city, with the problem to find all possible routes for a salesman passing through each of these cities . Computers today all use binary codes - 1's and 0's or on's and off's. These codes are the basis for all possible calculations a computer is able to perform. Because the DNA molecule is also a code, Adleman saw the possibility of employing DNA as a molecular computer. However, rather than relying in the position of electronic switches in a microchip, Adleman relied on the much faster reactions of DNA nucleotides binding with their complements, a brute force method that would indeed work A DNA computer is a collection of DNA strands that have been specially selected to aid in the search of solutions for some problems. DNA computing results in parallelism, which means that when enough DNA information is given, huge problems can be solved by invoking a parallel search

patches

Upper and lower case letters. And numbers. And it is long.
krn5d7F8H4rp is a good example.

Well when you update your computer it will secure your computer because windows has found errors. Sometimes there are back doors in Windows and Microsoft will send out updates to fill in that back door, so no one bad gets in. Just make sure your computer is up-to-date and make sure automatic updates are on. The Service Packs are packs of updates, almost like a mini operating system. Also, clean your computer for best performance.

Simply asking hp is a very broad statement. Its not who's its by its what format it includes. What operating system it uses. This are the components that are going to decide it. In my opinion Yes you can a a fingerprint reader to an hp laptop in most cases. But I won't do it because it is very costly and sometimes people can not log in because of some accident.

A web firewall usually has a least of hundreds of bogus, and malicious URL or websites. If it comes across a website that is on the least than it will inform the PC user of the dangerous content before he or she actually visits it. Most firewalls in schools and business block sites by their content not by their name. this is how it works an administrator configures the firewall to block certain categories of websites. Some commonly blocked websites are audio and video sharing, proxy servers and ofcourse adult video. Firewalls are helpful when it comes to protecting your computer and the people who view it. But it is also sometimes bad. Firewalls sometimes block some sites like youtube, sites like this one and gaming. The best method is knowing what your needs are and how to configure the firewall to let you do this. Firewalls slow down performance a little but its worth it.

Norton is the leader in security software for your computer with more PC Magazine Editor's choice awards than any other security company. Start a free trial and protect your PC today!

candely.club/CIBCkob

In encryption, a key is the information used to encrypt the data. 128 bit means that the key is 128 bits long (a bit is a single unit, or "bit" of data, either 0 or 1). The longer the key, the more complex the encrypted data becomes. 128 bits is considered a strong key length.

Information systems are a network of computers linked to perform many different functions in business. Information systems connect the accounting, marketing and information technology departments.

DDoS

Trojan Horse

usualy when you go to login to a website there is something at the bottom that says forgot password? you click on that and fill out the info then they send you an email.

E-saftey is all about being safe e.g. don't meet people who you don't know and don't see people who you don't know.

Powerpoint of lack of security of computer and its effect on industry,economy and government

Installation of a firewall can give a false sense of security, because many users do not understand the limitations of a firewall. Specifically, a firewall primarily defends against unsolicited incoming attacks: a hacker tries to access the internal network from the outside.

Firewalls often fail to effectively protect from threats from the inside: viruses (malware of all sorts, worms, etc), once active on the inside, may be able to spread within the network, and spawn network activity that traverses the firewall in both directions.

1. Airlines

2. Education

3. E-commerce

...

Pretty much all industries these days. Even farming is networked now.

Cisco Certified Network Associate.

Definitely not Norton or Mcafee, If you want one that is not a computer hog and has good rock solid protection try PC Tools Internet security or AVG Internet security. They are both good and i have had no problems with either of them.

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Task Manager Right click application (UnInstall shield) click goto process then end.