Nowadays a lot of data are received and store in the computer are being detected by the threat and become critical data information. Users are lack of concerns about the threats online. Those of the threats online will cause havoc and may result losing of the data. Users must be aware that their data may be stolen, loss or misused by other people through the threats such a viruses, worms, Trojan horses, phishing (refer as a crimeware technique to steal the identity of a target company to get the identities of its customers), crime ware, security hacking, back doors and etc. The computer security plays an important role in protecting users’ data and files from stolen by outside user. Security software not only just installed but it is always needed to update it to keep our data safe from those threats.
The following are the threat of online security:
Malicious Code: Viruses, Worms, and Trojan Horses
Malicious code is classified by how it spreads, sometimes referred as malware (a generic term for malicious software). Malware is used to commit new computer crimes. Malicious code includes viruses, worms and Trojan horses.
Viruses
A virus is a piece of software code that inserts itself into a host, including the operating systems, in order to spreads and running its host program activates the virus. A virus divided into two components. First, it has a propagation mechanism by which it spreads. Second, it has a payload that referring to what the virus does once it is executed. As we know some of the viruses simply infect and spread. Others will be do substantial damage such as deleting data files, documents can’t open and corrupting the hard drive.Worms
A worm can spread itself when use networks to propagate and infect a computer or handheld device such as cell phone and can spread the worms via instant messages being send. It can destroy files and programs as well as disrupt the operation of computer network.Trojan Horses
A Trojan horse is a program that appears to have a useful function but it will contains a hidden function that presents a security risk. Sometimes files be infected when the unsuspecting user runs the program, the user users unknowing it and installs the Trojan program. Once the Trojan program hidden in the computer, the user will turn on the attacked computer and display messages, files and documents on the affected computer have to delete.Botnets
Botnet known as a huge number of hijacked Internet computers that have been set up to forward traffic, including spam and viruses to other computers via the Internet. Botnets gives criminals plenty of power on the internet at large. A lot of control over the compromised systems, it may more damaging the activities.
Security Hackers
Hackers often us several software tools readily and freely available over the Internet. Although many of these tools require expertise, hackers easily can use many of the existing tools. For example the hackers infected when the users access the computer and click on the display website, the hackers will involved in the page and show the phrase of “hacked by” when the users open the website. Actually hackers is an illegal hackers thus, frequently entering get access to a computer system to attack the internet and other networks to steal or damage the data, programs and information.
Denial of service (DOS)
A denial of service (DOS) is an attack in which an attacker uses specialized software to send a flood of data packets to the target computer with the aim of overloading its resources. Many attackers rely on software created by other hackers and made available over the internet rather than developing it themselves.
Backdoors
A backdoor is a set of instructions in a program that once attacker access to unsecure computers. However a backdoor is typically a password that known only to the attacker. They often install a back door program, it could be modify an existing program or hardware drive and enable to continue to access the computers without the user’s knowledge or go through any online security.
The following are the various ways to safe our data:
1)-->Never open the file attachments, link websites and e-mail from someone you don’t know and even though friends sending the file or e-mail must also be avoid to open it. Unless we ask the sender before the attachment be open it. If not maybe the data consists of the viruses.
2)-->Install or buy the standard antivirus software. Nowadays a lot of viruses spread in the computer. Install the antivirus software not only installs it as well as must be always scan computer with antivirus software and use software updates. Take advantage of free software updates from the original publishers, which often contain “patches” to fix security flaws that have been discovered by the publishers themselves. Example of antivirus software such as BitDefender, Kaspersky, AVG7, VirusBuster and etc. Those antiviruses are important to delete the threats, and eliminate the viruses.
3)-->Always turn on the firewall to prevent hackers. A firewall plays significant to examine all data packets that pass through it and takes appropriate action such as to allow or not to allow. Firewalls can be used to protect against for example viruses which range from harmless messages to erasing all your data. Firewalls will examine those messages first, if do not meet the control or security-related criteria it may block all packets sent from a given Internet address.
4)--> Recognize and avoid e-mail spam. Indicators that an e-mail may be unsolicited spam include senders whose names you do not recognize and odd phrase in the subject line. Delete such messages without opening them, and empty your “trash” folder frequently.
5)--> Less downloading and connectivity through the unknown websites. Although some of the web pages contains viruses and hackers standby to enter to your data information.
In conclusion, a lot of risky threats spreads to the unprotected computer. Therefore, safeguards such as antivirus software can protect and secure the data from online security threats. Users be aware to the threats and more well knowing the ways to safe our data.
Botnet known as a huge number of hijacked Internet computers that have been set up to forward traffic, including spam and viruses to other computers via the Internet. Botnets gives criminals plenty of power on the internet at large. A lot of control over the compromised systems, it may more damaging the activities.
Security Hackers
Hackers often us several software tools readily and freely available over the Internet. Although many of these tools require expertise, hackers easily can use many of the existing tools. For example the hackers infected when the users access the computer and click on the display website, the hackers will involved in the page and show the phrase of “hacked by” when the users open the website. Actually hackers is an illegal hackers thus, frequently entering get access to a computer system to attack the internet and other networks to steal or damage the data, programs and information.
Denial of service (DOS)
A denial of service (DOS) is an attack in which an attacker uses specialized software to send a flood of data packets to the target computer with the aim of overloading its resources. Many attackers rely on software created by other hackers and made available over the internet rather than developing it themselves.
Backdoors
A backdoor is a set of instructions in a program that once attacker access to unsecure computers. However a backdoor is typically a password that known only to the attacker. They often install a back door program, it could be modify an existing program or hardware drive and enable to continue to access the computers without the user’s knowledge or go through any online security.
The following are the various ways to safe our data:
1)-->Never open the file attachments, link websites and e-mail from someone you don’t know and even though friends sending the file or e-mail must also be avoid to open it. Unless we ask the sender before the attachment be open it. If not maybe the data consists of the viruses.
2)-->Install or buy the standard antivirus software. Nowadays a lot of viruses spread in the computer. Install the antivirus software not only installs it as well as must be always scan computer with antivirus software and use software updates. Take advantage of free software updates from the original publishers, which often contain “patches” to fix security flaws that have been discovered by the publishers themselves. Example of antivirus software such as BitDefender, Kaspersky, AVG7, VirusBuster and etc. Those antiviruses are important to delete the threats, and eliminate the viruses.
3)-->Always turn on the firewall to prevent hackers. A firewall plays significant to examine all data packets that pass through it and takes appropriate action such as to allow or not to allow. Firewalls can be used to protect against for example viruses which range from harmless messages to erasing all your data. Firewalls will examine those messages first, if do not meet the control or security-related criteria it may block all packets sent from a given Internet address.
4)--> Recognize and avoid e-mail spam. Indicators that an e-mail may be unsolicited spam include senders whose names you do not recognize and odd phrase in the subject line. Delete such messages without opening them, and empty your “trash” folder frequently.
5)--> Less downloading and connectivity through the unknown websites. Although some of the web pages contains viruses and hackers standby to enter to your data information.
In conclusion, a lot of risky threats spreads to the unprotected computer. Therefore, safeguards such as antivirus software can protect and secure the data from online security threats. Users be aware to the threats and more well knowing the ways to safe our data.
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