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Computer Security
Computer security is the prevention/detection of, and response to, any unauthorized actions by users of a computer system. Questions about security practices and principles belong here.
1,022 Questions
Can you use a phone to save yourself from forgetting your computer passwords?
You can certainly store computer passwords on your phone... HOWEVER - make sure you (a) disguise them so they're not obvious to a 'casual snooper' who may also have access to your computer, and (b) store a copy of the data in another place in case your phone is stolen !
What system is the father of almost all modern multiuser systems?
There is no correct answer without qualifying which multiuser systems are being discussed. All modern operating systems have inherited traits and abilities from other older multiuser systems. There are multiple multiuser operating systems currently in use. IBM has their mainframe system (Z/os) as well as IBM i, both multiuser systems are unique from each other and from other systems. IBM also has AIX, a descendant of unix. Current unix systems go back to the original proprietary AT&T unix implementation in the 1970's and 1960's. Unix itself was modeled after a multiuser system called Multics. Linux was modeled after unix but written independently of it. Microsoft Windows NT was designed by Dave Cutler who brought his experience in developing OpenVMS with him. All other Microsoft Window implementations follow from that.
Why does PC security interfere with downloading from the Internet?
Computer security is information security as applied to computers and networks.
The field covers all the processes and mechanisms by which computer-based equipment, information and services are protected from unintended or unauthorized access, change or destruction. This included not only protection from unauthorized activities or untrustworthy individuals, but also from unplanned events and natural disasters. Bell-LaPadula model is one of the Computer security policy. The strategy is based on a coupling of special microprocessor hardware features, often involving the memory management unit, to a special correctly implemented operating system kernel.
What are the uses of the command line?
From the command line (in windows) you can access many of windows internal features such as trouble shooting the dll structure and network analysis for more information you can type 'help' in CMD (command line)
Most other operating systems have command lines, such as Linux and Ubuntu
WARRNING: you can really damage your computer if you don't know what your doing
Is there a way to see every password ever saved on your computer?
Yes, i know that if you check the remember my password then you can run a program that checks your computer and finds saved data.
Also if you installed a program on your computer called a Keylogger it would save every keystroke you make and you may anytime see what you wrote.
Note: The Keylogger is technically a virus However if you intently use it for security purposes then it is not, then it is counted as an asset.
WEP.
What is the best definition of Information Security?
There are so many different conflicting definitions about Information Security out there; however there are clear censuses amongst the field's professionals and leaders on the following definition writing by Michael Chahino and Jason Marchant:
INFORMATION SECURITY is a discipline governing the framework for the continuous cycle of safeguarding information and ensuring related regulatory compliance.
- Discipline
• a branch of instruction and learning such as history, finance, economics
- Framework
• a frame or structure composed of parts fitted together documenting the methodology of incident identification, mitigation, and resolution much like the scientific method
- Cycle
• a series of processes that are repeated in a precise and deliberate manner
- Information
• electronic, printed, audible, visual, memorized
- Compliance
• ensuring that the institution is in compliance with applicable laws, regulations, and contractual agreements
Source(s):Computer Security Institute (CSI) 2010 Annual Conference
Could probably be because when you installed Need For Speed it reserved its own memory needs. In other words while you were installing it it asked you or it informed you that it will need more memory to run...
Yes you still have 40GB of memory but a chunk of that belongs to Need For Speed..
Try to UN-Installing it and Install it again and pay close attention to what it says while its installing into your PC. If it tells you that it will take so and so number of memory see if you can limit the size of it.
Network mapper
What does tpm mean in computers?
A trusted platform module (TPM) is a chip that handles FDE (full-disk encryption) and other encryption-based security on a computer. It is primarily used in operating systems such as Windows 7 and 8 with the advent of BitLocker, which if enabled will disallow you from using the hard disk in another computer.
Why do you have a user name and password?
Usernames and passwords are used to prove that you are who you say you are and allow for users to have there on private files.
Where do you find the dell inspiron mini 10 serial number?
On the bottom left side there is a sticker with the info.
How RSA is public key algorithm?
RSA (which derives from the first initials of the last names of Prof. Ronald Rivest, Dr. Adi Shamir, and Prof. Leonard Adleman who first publicly described it) is an algorithm for public-key cryptography. A British mathematician named Clifford Cooks, who was then working for the UK intelligence agency GCHO, developed an equivalent system which was documented in an internal document in 1973, but because most computers of the time were not ready to handle the intensity of the computations it was never deployed (as far as is publicly known). That original work was not revealed until 1998 due to its top-secret classification, and Rivest, Shamir, and Adleman devised RSA independently of that classified work.
RSA is a very popular algorithm now and assumed to be secure given sufficiently long keys and the use of up-to-date implementations. It is the first algorithm known to be suitable for both encryption AND signing - although not usually at the same time.
The attached link goes into more detail on the nuts and bolts of the algorithm, but the basics are:
1) two large prime numbers, p and q are chosen at random
2) through a series of mathematical operations, two keys d and e.
3) the key d is held as the private key by the originator (it is kept secret)
4) the originator publishes the public key e and n- the product of the two original primes, i.e. n=p·q
5) messages encrypted or signed with d can only be decrypted or authenticated using n and e (and using the appropriate math of the RSA algorithm).
6) messages encrypted using d can only be decrypted and read by the holder of the private key, d.
7) RSA can be used to "sign" a message by creating a hash of the message, then using the private key to encrypt the hash, and then attaching this "signature" to the message. The recipient can authenticate the source of the message by using the public key to decrypt the signature and comparing the value of the decrypted hash to their own hash of the same message. As long as the two agree, the message must have come from the holder of the private key and the message has not been tampered with. If the two hashes DON'T match then either the sender does not have the private key (and thus we would assume is NOT who they claim to be) or the message has been tampered with or corrupted.
How do you encrypt your lynksyss wrt 54g router?
What worked for me was to use Win XP to automatically generate an encryption key and password that I then pasted into my Lynksys WRT54G router when prompted. That made my wi-fi access point secure with WPA2 encryption.
Until you do what precedes, I suggest that you at least disable public broadcasting by your router as follows: use your browser to access your router at 192.168.1.1 (the Linksys default address) and password "admin" (also their default password); then on the menu click on the Wireless tab; then put a checkmark next to "Disable public broadacasting."
What did absolutely NOT WORK were any of Linksys' "Secure Easy Setup" or their printed instructions or their totally useless "remote setup session" for which they charged me $9.99 and never even called me back as promised after a first "technician" screwed up my initial setup that was fine except that it had no encryption.
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What is the difference between cryptography and steganography?
Cryptography takes a file and transforms it, through a cryptographic algorithm, into a new file (usually of about the same size - although it may also pad it to bring it up to a standard size). This new file is known as cyphertext. The original file (also known as clear text) can be recovered from the cyphertext by application of the decryption algorithm. Usually the encryption requires some kind of "key" as part of the algorithm. If the same key is used to both encrypt and decrypt, it is known as "symmetric". If different keys are used to encrypt and decrypt, it is known as "asymmetric".
Steganography hides a file within another file. Usually this is done by making changes to the bytes of the file in a way that does not obviously change the file that is being used as the repository for the hidden file. An example would be to take a graphic file and change the bits in the file that indicate the color of the pixels in the graphic file. The binary "word" 0110 0111 could be hidden in the graphic file by leaving the color of the first pixel, incrementing the color of the second and third by one, leaving the next two unchanged, then incrementing the next 3 by one. Changing the colors by one leaves the picture in the graphic file looking unchanged - a change of 1 in the value of the color is imperceptible to the human eye. The hidden message could be recovered by subtracting the values from the unaltered picture from the picture that has the message hidden in it.
In the case of cryptography, the objective is to make the message unreadable to anyone who doesn't have the key and know the correct algorithm. In the case of steganography, the objective is to hide the existence of the message.
What are the penalties for downloading illegally?
try it find out. it doesn't matter if you don't get caught.
What is the best free data destruction software?
For me, it is the JPS or Beast. Either of the two, they create a virus that can totally destroy data and other info in a PC. JPS is a program that creates an application, script, or edit it's appearance to be a hoax. In JPS, you can edit, create, or multiply several files. You can select the effect by clicking options and check boxes. In beast, you can create a backdoor and target a PC. These two software is completely dangerous. Use it at your own risks.
Yes, eDreams is a very secured website. It is one of the major online travel agency in Europe, having "physical" offices in Spain, Italy and France. It also has a Verisign certification to secure all the data and payments. In case of any doubt or question, the call center is available by phone or email Monday to Saturday.
I would press refresh and try to log in again.
