well, firstly, downloading an infected program and starts it. after that, it will start copying itself and will attaches itself to other programs. after that some or all programs will be infected by it.
No antivirus in the world guarantees 100% protection.
First of all we should follow some Basic security rules:-
Do not visit suspicious websites
Be careful when installing freeware programs
Be cautious when opening email attachments
Update security softwares regularly
Backup important data
Regular scan for viruses
We can keep protect our system upto 70% by using these free security sofwares & online free services for a home-internet user
1- Antivirus : Install any one:- (a) AVG Free Edition (free.avg.com) (b) Avira Antivirus Personal(free-av.com) (c) Avast Free Edition(avast.com)
2- PC tune up software: Advanced System Care(iobit.com) and Ccleaner(piriform.com)
3- Malwarebytes Antimalware(malwarebytes.org) Or Superantispyware(superantispyware.com)
4- Spywareblaster
5- Online scan of system provided by: Eset Nod32 [1] and Microsoft [2]. See Related Links shown below.
If your system contain important data then purchase any one security software:-
1- AVG Antivirus
2- Eset Nod32 Antivirus
3- McAfee Virus Scan Plus
For a online banking user purchase any one:-
1- Avira Security Suite
2- Norton Internet Security
3- Eset Smart Security
4- McAfee Internet Security
My absolutely favorite FREE download is from Sandboxie [see Related Link 3 below]. I have gotten NO virus' since I installed it. As their website states, it "runs your programs in an isolated space which prevents them from making permanent changes to other programs and data in your computer." ... It works.
Many things can happen. Probably the most common one is a noticeable decrease in your computer's overall performance. The second thing that can happen is your computer can start tasks without your permission or without your knowledge. The third thing that can happen is a sort of scam, where you get fake messages of advertisements, which can get very annoying. Probably the worst of all is that the malware can disable all your computer's security software and download other malware, which in turn messes up your computer so badly to the point where it crashes.
E-Mails, malicious web sites, music or video downloads, corrupt program downloads and any messenger service.
A computer virus is a computer program that can copy itself and infect a computer
Download or install it from an unsafe site or email attachment.
hp is a name model of a notebook computer so there is no reason to catch a virus you need to use antivirus software to catch a virus from your computer.
Virus
yes if its plugged into a computer with a virus.
Downloads from the internet, opening attachments from emails
can you catch a virus in 24 hours
definition of a computer virus definition of a computer virus
The person who invented the creeper vrius is mr.dominic alejandro if your computer is infected by the creeper virus the messege "I'm the creeper catch me if you can!" this was displayed on screens of infected computers was desinged in 1971
"The Creeper virus, it was first detected on ARPANET" - WikiPedia. The Creeper Virus displayed the message when connecting via dial-up: "I AM THE CREEPER: CATCH ME IF YOU CAN". It was discovered in 1789. This answer is Abhinav jain
Every computer could have a virus but if you use your computer carefully it can be impossible for the virus to come to your computer.
A virus can be caught from anyone.
Free virus scan and removal programs are adequate for most computer users and work well to catch common viruses. Paid versions offer more coverage as well as computer support.
Scanning virus only help to find the virus inside your computer disks, but do no other actions, virus is still in your computer. But Removing virus not only find it, but also remove the virus from your computer. Thus no such virus will remain in your computer after that.