Computer Security

Suppose you have two users A and B who can access your computer.You login to user account A and does some work.Now it may be possible that A account has limited user priviledges.So you LOG OFF user A and goes to user B.Logging off just shutdown one user and gives you option to work with another.If you wish to use both users without closing programs on any of them than you can use the option SWITCH USERS

Get some night vision goggles and find out

Patch Tuesday (or Black Tuesday) is the second Tuesday of every month. It is the day that Microsoft releases new patches for the Windows operating system & other Microsoft products. Patches are released via the OS's "Window's Update" application.

It depends which country you are in. Some repairs they need to look in your hard drive to find a corruption or virus this doesn't give them carte blanche to view family pics or read your email

In some countries if whilst repairing your computer they come across files which may not be lawful then they may have to report it

Eugene Kaspersky

Try Wikipedia! It's crackin' that is cha!

A Degradation of Service attack is just a Denial of Service attack that doesn't completely overwhelm the target. It is subjective as to the point at which the degradation is so severe that it constitutes a full blown Denial of Service attack.

Three confidentiality levels are used in DIACAP:

Public

Sensitive

Classified

Historically, information security solutions have focused on preventing external threats such as viruses, hackers and worms through perimeter solutions that include firewalls and antivirus software. While still aware of outside threats, companies are now coming to understand they can no longer ignore inside violations concerning data at rest. So information security and privacy is of atmost importance whether it is internal or external.

Today's employees are able to easily export sensitive files and information via email or by copying to file shares and portable media without concerning about data security and data privacy. Many companies simply do not have the resources or appropriate policies in place to identify NPI and PII and avoid inadvertent, accidental mis-steps or malicious actions from within. As companies continue to accumulate NPI and PII, they are under enormous pressure to mitigate risk and to provide data security to sensitive information before an undesirable loss occurs. Whether you call it data security, Content Loss Prevention or simply Information Security solutions & Privacy, the time has come to take steps to protect your company's data privacy.

Deployed in under 30 minutes, the Kazeon's Information Server i.e. information security solutions system discovers sensitive information contained in emails and files regardless of physical or logical location.

For a laptop yes, it may overheat. The fans tend to be on the bottom of the laptop itself and kind of defeats the purpose of the name "laptop" because they advise you not to put on soft surfaces such as blankets or sometimes even your lap.

No it does not the warenty with dell is for physical properties of the computer not virtual so if you fry the graphics card then they will replace it now on the other hand if you used 3rd party software and overclocked anything then no they will not replace it. however i will also say downloading anything from torrents are dangerous and there not illegal to download but illegal to use in US but to download an operating system is the worst thing you can do you never know what the seeder has done to the OS software. also if you want a safe version to use sign up for Microsoft technet and they should have an evaluation version that's good from 90 to 180 days and if u can crack a key then. than its safe

• Your middle name
• Your middle name followed by a number
• Your maiden name
• Your favorite song
• Your favorite movie
• Your birthday
• Numbers that you can remember
• Your pets name followed by a number
• Your boyfriends/husbands name
• something like ______ (someones name) + _______ (your name) = BFF's or together forever or forever and always
• wedding date or anniversary

keyboard, screen, mouse

It IS possible - and has been done in the past. However by 'a lot of emails' you would be talking about many hundreds of thousands sent simultaneously. You would need the co-operation of thousands of people, all sending at precisely the same time in order for such a cyber-attack to have any effect. Bear in mind, though, any such attack would be illegal - and every perpetrator would eventually be traced.

This depends on the kind of BIOS protection, and the other BIOS settings. The BIOS is not actually on the harddrive, so this is potentially possible.

If the BIOS is only protected from changes to it's settings, then you can try booting to removable media (CD, DVD, Flashdrive, etc.) which has the option to format a drive, and format it from there. OS install disks usually have this option, as well as boot disks like UBCD and Bart PE.

If the BIOS is protecting the system from booting up, then you will probably need to remove the harddrive and plug it into another computer to complete this task. There should be no password prompt once it is in the other computer.

IF the BIOS protection is locking the actual harddrive, then you will probably need to clear the password first. If you do not know the password, then you will need to try to break in (assuming is is actually your computer). This can be difficult, but there are programs which can make it easier. One such program is on the UBCD.

Deep packet filtering first examines the data part (and possibly also the header) of a packet as it passes an inspection point, searching for protocol non-compliance, viruses, spam, intrusions or predefined criteria to decide if the packet can pass or if it needs to be routed to a different destination, or for the purpose of collecting statistical information. This differs from "stateful packet inspection" (shallow filtering) where only the type of traffic and possibly the source and destination are inspected, not the contents of the traffic.

Change your password often, and make sure it's strong (mix of letters, numbers, and caps).

FTP is a TCP based service exclusively. There is no UDP component to FTP. FTP is an unusual service in that it utilizes two ports, a 'data' port and a 'command' port (also known as the control port). Traditionally these are port 21 for the command port and port 20 for the data port. The confusion begins however, when we find that depending on the mode, the data port is not always on port 20.

In active mode FTP the client connects from a random unprivileged port (N > 1023) to the FTP server's command port, port 21. Then, the client starts listening to port N+1 and sends the FTP command PORT N+1 to the FTP server. The server will then connect back to the client's specified data port from its local data port, which is port 20. From the server-side firewall's standpoint, to support active mode FTP the following communication channels need to be opened: * FTP server's port 21 from anywhere (Client initiates connection) * FTP server's port 21 to ports > 1023 (Server responds to client's control port) * FTP server's port 20 to ports > 1023 (Server initiates data connection to client's data port) * FTP server's port 20 from ports > 1023 (Client sends ACKs to server's data port)

In order to resolve the issue of the server initiating the connection to the client a different method for FTP connections was developed. This was known as passive mode, or PASV, after the command used by the client to tell the server it is in passive mode. In passive mode FTP the client initiates both connections to the server, solving the problem of firewalls filtering the incoming data port connection to the client from the server. When opening an FTP connection, the client opens two random unprivileged ports locally (N > 1023 and N+1). The first port contacts the server on port 21, but instead of then issuing a PORT command and allowing the server to connect back to its data port, the client will issue the PASV command. The result of this is that the server then opens a random unprivileged port (P > 1023) and sends the PORT P command back to the client. The client then initiates the connection from port N+1 to port P on the server to transfer data. From the server-side firewall's standpoint, to support passive mode FTP the following communication channels need to be opened: * FTP server's port 21 from anywhere (Client initiates connection) * FTP server's port 21 to ports > 1023 (Server responds to client's control port) * FTP server's ports > 1023 from anywhere (Client initiates data connection to random port specified by server) * FTP server's ports > 1023 to remote ports > 1023 (Server sends ACKs (and data) to client's data port)

In the US Defense Department laboratory.

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 !

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.