What is a Virus?
A virus is a program that when executed replicates by inserting copies of itself into other computer programs, data files, or the boot sector of the hard drive, when this replication succeeds the affected areas are then said to be “infected”. Viruses often perform some type of harmful activity on infected hosts, such as stealing hard disk space or CPU time, accessing private information, corrupting data, displaying political or humorous messages on the user’s screen, spamming their contacts,logging their keystrokes, or even rendering the computer useless.
How does a virus find me?
- Sharing music, files or photos with other users.
- Visiting an infected Web site.
- Opening spam email or an email attachment.
- Downloading free games, toolbars , media players and other system utilities.
What does a virus do?
Some computer viruses are programmed to harm your computer by damaging programs, deleting files, or reformatting the hard drive. Others simply replicate themselves or flood a network with traffic, making it impossible to perform any internet activity. Even less harmful computer viruses can significantly disrupt your system’s performance, sapping computer memory and causing frequent computer crashes.
What are the symptoms of a virus?
- Slow computer performance.
- Erratic computer behavior.
- Unexplained data loss.
- Frequent computer crashes.
Some examples of Virus
- The Concept virus
- CIH (Chernobyl virus )
- The Melissa virus
- Netsky and Sasser
Run a free online virus scan :- Here
What is a Trojan?
In computers, a Trojan horse is a program in which malicious or harmful code is contained inside apparently harmless programming or data in such a way that it can get control and do its chosen form of damage, such as ruining the file allocation table on your hard disk.
How does a trojan find me?
- Using unsafe Instant message clients.
- IRC ( Internet Relay Chat ).
- Peer 2 Peer Downloads.
- Open ports not protected by firewall.
What does a trojan do?
Trojans basically does no harm to your computer but indeed just gives access to your computer to the attacker who installed Trojan in your computer. These Trojans are also called Remote Access Trojans (RAT). If someone has placed a Trojan on your computer, they’ll be able to see everything that you can. Some of them can even control your webcam. That means the attacker can see you! If you have speakers attached to the PC, they can even hear you!
What are the symptoms of a trojan?
- My computer speaks to me.
- Applications won’t start.
- File Missing
- Antivirus Application just got disappeared
- Firewall Disabled
Some examples of Trojan
- 007 Shell
- 23 trojan
- Acid Battery
- AIM Jacker
- Backdoor Rat
Run a free online Trojan Scan :- Here
What is a Malware?
Malware, short for malicious software, is any software used to disrupt computer operation, gather sensitive information, or gain access to private computer systems.
How does a malware find me?
- From illegal file-sharing services.
- From a pop-up window.
- From physical media.
- From another piece of software.
What does a malware do?
Malware is sometimes used broadly against government or corporate websites to gather guarded information, or to disrupt their operation in general. However, malware is often used against individuals to gain information such as personal identification numbers or details, bank or credit card numbers, and passwords. Left unguarded, personal and networked computers can be at considerable risk against these threats.
What are the symptoms of a malware?
- More Crashes.
- Suspicious Hard drive activity.
- Unusual high network activity.
- New Browser home page, new toolbars and/or your browser opens unwanted websites.
- Unusual messages or programs starting automatically.
Some examples of Malware
Other Than this :-
- Trojan Horse