Hi. This is 10 programs kind that you should not run in your computer for securty reason or damage your systems.
1.Programs that never update
This is very clear, many programs have critical exploit that malware can use them to infected your computer. The programs that mostly have this problem is Windows itself, Adobe Flash Player, Java and all Internet Browsers. Be sure that automatic update is enabled. Or your program will not be protected by programs vendors that trying to update the fix for critical bug or sort of like that.
Registry is where your operating system and programs store theirs options in it like a very big and fragile database, all of Windows functions,windows booting parameters,file extensions database,user settings,program settings,and much much more million entries in it. A little bit wrong when modifing Registry can render your systems unusable. So those programs will perform action that involved with edit,delete or create registry key. Almost all information they give to you is technical information that hard to understand and most will apply changes without read anything. Not many programs create backup before apply changes,so I recommended you not to run any registry cleaner/fixer.
This is really common. If you feels don't like to buy a program. You will head for somewhere give you a crack/patch/keygen that allow using programs for free. But there are hidden costs,"Virus". You will never know that your systems got infected because you are who receive it in.(Trojan, you knows.) These viruses can keystroke your keyboard for credit card number,password,or anything you typed into your keyboard. You don't like to pay for 10$ of program? Virus will steal your credit card number and spend 10000$ for you. If you really don't want to buy programs right now, there are 3 alternative choices:
1.Try free version: Almost all programs that not free allowyou to try it for free like 30 days, you will know you like it or not, so after you bought it, you will really like it,and you will spread a word about it,that good for programs vendors too. Win-Win.
2.Buy it: Easiest option,buy it, and got legitmate programs,but you have to be sure that you really like it,not just because promotion. Also be sure that it is not a rogue programs.
3.Search for free alternatives: Many people feels like you too about programs prices, and if they are experts, they may create free alternatives. (programs that free and have nearly options of paid one.) Good examples are : OpenOffice Instead of MicrosoftOffice , Photobooth instead of YouCam , Youtube downloader extensions for firefox instead of IDM. etc.
4. Options programs in other programs installer
When you download program from sites like cnet or brothersoft, you will get its installer instead of real file,and in it will have like 4 parts in it: License Agreement,main program EULA,options and installation. The worst things is Options, there are many programs they like you to download and 90% of them are Browser Hijacker or unusable toolbars. Read everything before process to next installation steps,unchecker every optional programs. The examples of these optionals are ask toolbar,delta toolbar,babylon,Hao123, etc.
5.Free programs that untrustable/Unknown Publishers
Unknown Publisher, no support for errors and maybe tools for hackers. Untrustable = danger and avoid.
Two words above must be remember before download any programs that you will download, research about it a bit before download,and you will see its reputation,reviews and Malware reports. Some programs make their website looks professional but its just "the cover", your decision to download or not is the hardest part of malware to infect the computer.(Except worms.)
After you download, noone knows what happen next, so please check before download.
Sometimes you got files in your mail attachment that pretend to be a image with .jpg extensions,but it maybe .jpg and follow with long blank then ".exe"? Or your computer set to hide extensions? So,if you don't know its real extension,don't open it. Easiest way to determine what its extension is to right click at it > Properties and it will show "Type of file" so you will know you got trick or not.
Not all antivirus can be safe programs, many rogue antivirus had been found,so if you don't sure that its safe or not,use programs from Major companies, not random. Many companies allow you to use them for free, like Avast, McAFee, AVG or Avira.
Nuke programs are programs that allow you to do nasty things to other computers in the network remotely.(Like shutdown, display message, or delete everything.) But many times,it turn to be that program nuke your computer instead. So care about communites computers like you care of yourself one.
These are really bad when you try to use some programs but you cannot read what some buttons do. This can led to many problems. I got really bad experience when I try to use Russian program to do something with Windows, but I don't know what button to click so I random and BOOM! All drivers gone. So Please don't do anything if you cannot understand it.
10.Email Attachments with suspicious title or sender
This is how ILoveYou worm spread. Send out email like loveletter, trick you to open and boom. So Check sender before oprn attachments or email.(Some malware configure itself to infect from opening email, even when you not open attachments.) If your friends change language to speak with you, freind said his/her computer got infected,Ad Email or email in spam box. Delete emails come from friends when they said they don't send anything to you, and all emails in spam box.(Open them only when there is evidence items in that email is safe.) And you won't easily get infected.
Thats it! Hope you like it!