What is antivirus software?
There are a variety of antivirus software packages that are active in many different ways, depending on how the vendor chose to implement their software. What they have in common is that they all look for patterns in files or memory of your computer that the possible presence of a virus in te geven. Antivirus packages know what to look through the use of virus profiles (sometimes called "signatures") provided by the seller.
New viruses are discovered daily. The effectiveness of antivirus software is dependent on the latest virus profiles installed on your computer so they can look for recently discovered viruses. It is important to these profiles up to date.
Sunday, April 4, 2010
Data Security
Companies that value their data need a detailed scheme for the recovery backup. This includes on site backups for least amount of time set, a copy of this data off site in case the computer room disaster and contingency plans in place. Unfortunately, an easy way to access a company to retrieve data is to obtain access to backup tapes and delicate prints. Therefore, all sensitive data stored in locked cabinets. Backup tapes should be sent site in containers. Old sensitive printouts and tapes should be destroyed.
To protect the computer from damage due to power outages (and spikes), given to the computers on a UPS. This ensures consistent power, protects against downtime, and protects the computer against power surges. Ideally, a backup generator for production systems. On non-production, there must be an automatic way to shutdown the computer if the power to transfer to the UPS for more than 1 / 2 the time the UPS is rated to supply.
Companies that value their data need a detailed scheme for the recovery backup. This includes on site backups for least amount of time set, a copy of this data off site in case the computer room disaster and contingency plans in place. Unfortunately, an easy way to access a company to retrieve data is to obtain access to backup tapes and delicate prints. Therefore, all sensitive data stored in locked cabinets. Backup tapes should be sent site in containers. Old sensitive printouts and tapes should be destroyed.
To protect the computer from damage due to power outages (and spikes), given to the computers on a UPS. This ensures consistent power, protects against downtime, and protects the computer against power surges. Ideally, a backup generator for production systems. On non-production, there must be an automatic way to shutdown the computer if the power to transfer to the UPS for more than 1 / 2 the time the UPS is rated to supply.
Who wants to break into my home computer?
Intruders (also referred to as hackers, attackers, or crackers) may not care about your identity. Often they want to take control of your computer, so that they can use to launch attacks on other computer systems.
After verifying your computer gives them the opportunity to develop their true location as they often launch attacks against high-profile computer systems such as government or financial systems to hide. Even if you have a computer connected to the Internet just the latest games or to email to friends and family, your computer can be a target.
Intruders may be able to keep all your actions on the computer, or harm your computer by reformatting your hard drive or changing your data view.
Intruders (also referred to as hackers, attackers, or crackers) may not care about your identity. Often they want to take control of your computer, so that they can use to launch attacks on other computer systems.
After verifying your computer gives them the opportunity to develop their true location as they often launch attacks against high-profile computer systems such as government or financial systems to hide. Even if you have a computer connected to the Internet just the latest games or to email to friends and family, your computer can be a target.
Intruders may be able to keep all your actions on the computer, or harm your computer by reformatting your hard drive or changing your data view.
Computer Security Do I?
Every organization and individual has certain vital information - a unique formula, specialized customer database, a personal journal, annual financial data, etc. The organization would be compromised when they fall into the wrong hands.
Until a few years ago, the protection of such information is relatively simple. All required a strong one was safe with a single key to access. However, as privacy no longer exists. Encryption is the only way to protect your valuables. Currently, with the exception of a few strong encryption packages, there are no resources for this critical encryption function.
Passwords within most programs (Word, Excel, Access etc.) can be broken by a few beginners without any knowledge of computing. Such password breaking tools are easily found on the worldwide web for as little as $ 5.95, or sometimes even free!
Most companies invest millions of dollars in setting up firewalls and try to secure their networks. Ironically, they have the least amount of money to spend to protect the area where the data actually resides or has made the PC for their employees to use. The costs involved in securing data at the level of the user minimum. They just refuse to pay $ 35 for a security.
Encryption makes your data even if accessed by an unauthorized person, incomprehensible and unusable. By adopting the simple preventive techniques you can ensure complete data privacy.
Hacking no longer requires experts. There are literally thousands of off-the-shelf programs available on the Internet that are as easy as using the software packages that you are so familiar. Anyone, even a child with limited or no computer know-how, these packages can hack into your systems. There is no defined requirement learning curve - or the amount of background knowledge essential to an effective 'hacker' is almost zero.
Simple acts like going online to check your email to expose your machine is hacked. It is a trivial task to 'listen' someone e-mail, so that all future correspondence is now in the inbox of the hacker as well.
On http://www.cs.auckland.ac.nz/ ~ pgut001/pubs/secure_del.html find a scientific study made by Peter Gutmann, from Department of Computer Science at the University of Auckland, which is explained in full technical details of the principles of magnetic order principle and which methods can be used to recover files after they have been overwritten several times with data. You can also find a ton of references to other scientific paper on the same subject.
Every organization and individual has certain vital information - a unique formula, specialized customer database, a personal journal, annual financial data, etc. The organization would be compromised when they fall into the wrong hands.
Until a few years ago, the protection of such information is relatively simple. All required a strong one was safe with a single key to access. However, as privacy no longer exists. Encryption is the only way to protect your valuables. Currently, with the exception of a few strong encryption packages, there are no resources for this critical encryption function.
Passwords within most programs (Word, Excel, Access etc.) can be broken by a few beginners without any knowledge of computing. Such password breaking tools are easily found on the worldwide web for as little as $ 5.95, or sometimes even free!
Most companies invest millions of dollars in setting up firewalls and try to secure their networks. Ironically, they have the least amount of money to spend to protect the area where the data actually resides or has made the PC for their employees to use. The costs involved in securing data at the level of the user minimum. They just refuse to pay $ 35 for a security.
Encryption makes your data even if accessed by an unauthorized person, incomprehensible and unusable. By adopting the simple preventive techniques you can ensure complete data privacy.
Hacking no longer requires experts. There are literally thousands of off-the-shelf programs available on the Internet that are as easy as using the software packages that you are so familiar. Anyone, even a child with limited or no computer know-how, these packages can hack into your systems. There is no defined requirement learning curve - or the amount of background knowledge essential to an effective 'hacker' is almost zero.
Simple acts like going online to check your email to expose your machine is hacked. It is a trivial task to 'listen' someone e-mail, so that all future correspondence is now in the inbox of the hacker as well.
On http://www.cs.auckland.ac.nz/ ~ pgut001/pubs/secure_del.html find a scientific study made by Peter Gutmann, from Department of Computer Science at the University of Auckland, which is explained in full technical details of the principles of magnetic order principle and which methods can be used to recover files after they have been overwritten several times with data. You can also find a ton of references to other scientific paper on the same subject.
What is cable modem?
A cable modem allows a single computer (or network of computers) to connect to the Internet via cable TV network. The cable modem usually has an Ethernet LAN (Local Area Network) connection to the computer, and is capable of speeds exceeding 5 Mbps.
Typical speeds are generally lower than the maximum, but since cable services by all districts in LANs that share the same bandwidth. Because of this "shared-medium" topology, cable modem users can access the network slightly slower experience during periods of peak demand, and perhaps more susceptible to risks such as packet sniffing and unprotected Windows users to share than other forms of connectivity
A cable modem allows a single computer (or network of computers) to connect to the Internet via cable TV network. The cable modem usually has an Ethernet LAN (Local Area Network) connection to the computer, and is capable of speeds exceeding 5 Mbps.
Typical speeds are generally lower than the maximum, but since cable services by all districts in LANs that share the same bandwidth. Because of this "shared-medium" topology, cable modem users can access the network slightly slower experience during periods of peak demand, and perhaps more susceptible to risks such as packet sniffing and unprotected Windows users to share than other forms of connectivity
How is broadband different from the network I use at work?
Corporate bonds and government networks are typically protected by many layers of security, ranging from network firewalls to encryption. Moreover, they usually have support staff who maintain the security and availability of these network connections.
Although your ISP is responsible for maintaining the services they provide to you, you probably will not have dedicated staff on hand to manage and operate your home network. You are ultimately responsible for your own computers. As a result, it is up to you to take reasonable precautions to make your computers from accidental or intentional abuse secured.
Corporate bonds and government networks are typically protected by many layers of security, ranging from network firewalls to encryption. Moreover, they usually have support staff who maintain the security and availability of these network connections.
Although your ISP is responsible for maintaining the services they provide to you, you probably will not have dedicated staff on hand to manage and operate your home network. You are ultimately responsible for your own computers. As a result, it is up to you to take reasonable precautions to make your computers from accidental or intentional abuse secured.
Computers and hardware mechanisms to protect data
Hardware-assisted or computer security provides an alternative to software-only computer security. Devices such dongles can be regarded as more secure due to the physical access needed to be compromised.
While many software-based security to encrypt the data to data from being stolen, a malicious program or hacker can corrupt data in order to irreparable or unusable. Also, encrypted systems are corrupted by a hacker or a malicious program, making the system unusable. Hardware-based security solutions can prevent read and write access to data and therefore provides very strong protection against tampering and unauthorized access. [Edit]
Works of hardware-based security: a device allows the user to log in and log on different levels of duty by doing manual operations. The device uses biometric technology to prevent malicious users to log on, log off, and changing privilege levels. The current state of a user of the device is both read by a computer and peripheral controllers such as hard disks. Illegal access by a malicious user or a malicious program is suspended based on the current state of a user hard drive and DVD controllers enable illegal access to data impossible. Hardware-based access control is safer than using login and log out of OS operating system are vulnerable to malicious attacks. Since the software can manipulate the user privilege levels, it is impossible for a hacker or a malicious program to access data protected by the hardware safely or to perform illegal acts to gain privileged. The hardware protects the image of the operating system and file system privileges tampering. Therefore, a completely secure system should be created using a combination of hardware-based security and systems security policy.
Hardware-assisted or computer security provides an alternative to software-only computer security. Devices such dongles can be regarded as more secure due to the physical access needed to be compromised.
While many software-based security to encrypt the data to data from being stolen, a malicious program or hacker can corrupt data in order to irreparable or unusable. Also, encrypted systems are corrupted by a hacker or a malicious program, making the system unusable. Hardware-based security solutions can prevent read and write access to data and therefore provides very strong protection against tampering and unauthorized access. [Edit]
Works of hardware-based security: a device allows the user to log in and log on different levels of duty by doing manual operations. The device uses biometric technology to prevent malicious users to log on, log off, and changing privilege levels. The current state of a user of the device is both read by a computer and peripheral controllers such as hard disks. Illegal access by a malicious user or a malicious program is suspended based on the current state of a user hard drive and DVD controllers enable illegal access to data impossible. Hardware-based access control is safer than using login and log out of OS operating system are vulnerable to malicious attacks. Since the software can manipulate the user privilege levels, it is impossible for a hacker or a malicious program to access data protected by the hardware safely or to perform illegal acts to gain privileged. The hardware protects the image of the operating system and file system privileges tampering. Therefore, a completely secure system should be created using a combination of hardware-based security and systems security policy.
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