One way that hackers gain access to secure information is through malware, which includes computer viruses, spyware, worms, and other programs. These pieces of code are installed on computers to steal information, limit usability, record user actions, or destroy data. Using strong antivirus software is one of the best ways of improving Antivirus and Malware Protection information security. Antivirus programs scan the system to check for any known malicious software, and most will warn the user if he or she is on a webpage that contains a potential virus. Most programs will also perform a scan of the entire system on command, identifying Antivirus and Malware Protection and destroying any harmful objects.
Most operating systems include a basic antivirus program that will help protect the computer to some degree. The most secure programs are typically those available for a monthly subscription or one-time fee, and which can be downloaded online or purchased in a store Antivirus and Malware Protection. Antivirus software can also be downloaded for free online, although these programs may offer fewer features and less protection than paid versions.
Even the best antivirus programs usually need to be updated regularly to keep up with the new malware, and most software will alert the user when a new update Antivirus and Malware Protection is available for downloading. Users must be aware of the name and contact method of each anti-virus program they own, however, as some viruses will pose as security programs in order to get an unsuspecting user to download and install more malware. Running a full computer Antivirus and Malware Protection scan on a weekly basis is a good way to weed out potentially malicious programs.
A firewall helps maintain computer information security by preventing unauthorized access to a network. There are several ways to do this, including by limiting the types of data allowed in and out of the network Antivirus and Malware Protection, re-routing network information through a proxy server to hide the real address of the computer, or by monitoring the characteristics of the data to determine if it's trustworthy. In essence, firewalls filter the information that passes through them, only allowing authorized content in. Specific websites, protocols (like Antivirus and Malware Protection File Transfer Protocol or FTP), and even words can be blocked from coming in, as can outside access to computers within the firewall.
Most computer operating systems include a pre-installed firewall program, but independent programs can also be purchased for additional security options. Together with an Antivirus and Malware Protection antivirus package, firewalls significantly increase information security by reducing the chance that a hacker will gain access to private data. Without a firewall, secure data is more vulnerable to attack.
Codes and Cyphers
Encoding data is one of the oldest ways of securing written information. Governments and military organizations often use Antivirus and Malware Protection encryption systems to ensure that secret messages will be unreadable if they are intercepted by the wrong person. Encryption methods can include simple substitution codes, like switching each letter for a corresponding number, or more complex systems that require complicated algorithms for decryption. As long as the code method is kept Antivirus and Malware Protection secret, encryption can be a good basic method of information security.
On computers systems, there are a number of ways to encrypt data to make it more secure. With a symmetric key system, only the sender and the receiver have the code that allows the data Antivirus and Malware Protection to be read. Public or asymmetric key encryption involves using two keys — one that is publicly available so that anyone can encrypt data with it, and one that is private, so only the person with that key can read the data that has been encoded. Secure socket layers use digital certificates Antivirus and Malware Protection, which confirm that the connected computers are who they say they are, and both symmetric and asymmetric keys to encrypt the information being passed between computers.
Businesses and industries can also maintain information security by using privacy laws. Workers at a company that handles secure data Antivirus and Malware Protection may be required to sign non-disclosure agreements (NDAs), which forbid them from revealing or discussing any classified topics. If an employee attempts to give or sell secrets to a competitor or other unapproved source, the company can use the NDA as grounds for legal proceedings. The use of liability laws Antivirus and Malware Protection can help companies preserve their trademarks, internal processes, and research with some degree of reliability.