Safe Files

What's a File Extension?

A file extension is the last characters after the period in the name of a file and identifies the type of data found in the file. For example, to look for images on a computer, one would search for .gif and .jpg files.

Computer system files can be divided into two main groups which both of them are very important and perform a crucial role in your machine's stability and performance. The first group of files is system files, which ensures your system's stability. The second group of files is application files that are used in order to load various programs smoothly. Additionally, there is a third and less desirable group which is made up of malicious files.

Malicious files are designed to infect your machine and perform spyware tasks such as collect personal information about you, cause your computer to run slowly, and change the settings on your computer. In many cases, spyware needs to use a legitimate program or file in order to run so it is important to differentiate between a valid file and one associated with a spyware.

What Will Happen if You Delete or Remove a Safe File?

There are two categories of safe files on a computer system: "safe user added" files and "safe system" files. "Safe user added" files are additional files added onto a system by a user; these files are not essential for the operation of a system (e.g. .mp3 or .jpeg files). "Safe user added" files can be deleted at any time without causing any change or damage to the system.

"Safe system" files are those files that are necessary for the system to run effectively. Deleting any of these files will definitely affect a system in one way or another. The following are examples of "safe system" files:

Program Files - These files store the programs running on a system. If deleted certain programs may not run or will malfunction.
Operating System Files - These files are responsible for the operations of a system. If deleted a system may crash or not start-up at all.
Hidden files - These files are commonly used to hide essential files associated with the operating system or user settings. If deleted a system may crash. Criminals may also use this function to hide the presence of malware.

Top Safe Files By Detection Count

Name	Detection Count	First Detected	Last Detected
FastFreeConverterUpdt.exe	154,274	08/28/2012 05:03:35 EST	03/05/2013 11:49:19 EST
PRISMXL.SYS	51,835	03/03/2010 01:47:14 EST	08/17/2010 05:40:01 EST
updater.exe	40,610	07/22/2012 08:21:34 EST	10/22/2012 02:43:36 EST
sndappv2.exe	35,305	12/12/2012 06:55:05 EST	01/31/2013 11:47:49 EST
SSync.exe	34,473	01/27/2013 08:26:06 EST	04/09/2013 03:12:08 EST
RuntimeBroker.exe	33,459	08/19/2012 02:56:02 EST	06/06/2013 05:43:02 EST
FlipShareServer.exe	32,358	12/18/2010 02:52:58 EST	08/29/2011 07:07:28 EST
AegisP.sys	28,995	04/12/2010 08:19:57 EST	08/17/2010 12:56:48 EST
wwahost.exe	26,241	09/29/2012 08:49:38 EST	06/06/2013 06:42:00 EST
QuickPCBooster.exe	22,119	12/12/2012 09:36:10 EST	02/23/2013 06:57:06 EST

Our database of safe files will provide you with detailed information on each file; this includes the type of file, its classification and the program or process that it is associated with. Take a look at the latest safe files or search by letter or number.

Latest Safe Files

There are currently 181,943 safe files in our database.

File Name	Detection Count	First Detected	Last Detected
flashutil32_11_7_700_224_activex.exe	4,747	06/11/2013 16:07:58 EST	06/15/2013 03:21:35 EST
FlashUtil64_11_7_700_224_ActiveX.exe	1,663	06/11/2013 14:57:09 EST	06/15/2013 03:15:01 EST
FlashPlayerPlugin_11_7_700_224.exe	6,474	06/11/2013 14:14:01 EST	06/15/2013 03:21:00 EST
stwrt.sys	141	05/31/2013 07:16:30 EST	N/A
rixdpe86.sys	112	05/31/2013 07:14:19 EST	N/A
eEBSVC.exe	200	05/31/2013 06:33:51 EST	N/A
asEngine.dll	253	05/24/2013 09:06:19 EST	N/A
NCW.DLL	231	05/24/2013 09:03:26 EST	N/A
DataStor.dll	219	05/24/2013 09:02:58 EST	N/A
isDataPr.dll	81	05/24/2013 08:55:09 EST	N/A
SYMRDRSV.DLL	78	05/24/2013 08:54:50 EST	N/A
IRON.DLL	75	05/24/2013 08:54:32 EST	N/A
buComm.dll	41	05/24/2013 08:51:43 EST	N/A
BUSVC.DLL	37	05/24/2013 08:50:35 EST	N/A
SymRedir.dll	19	05/24/2013 08:50:03 EST	N/A
diStRptr.dll	290	05/24/2013 08:21:59 EST	N/A
ccL120U.dll	231	05/24/2013 07:55:02 EST	N/A
DiscSoftBusService.exe	117	05/23/2013 12:40:32 EST	05/29/2013 09:53:42 EST
BAVSvc.exe	2,736	05/16/2013 04:42:17 EST	06/04/2013 22:08:14 EST
SET390.tmp	72	05/14/2013 18:40:39 EST	05/14/2013 18:40:39 EST

How Can You Tell if a File is Legitimate?

There are legitimate file extensions that are not malicious. File extensions are components of your operating system or software. Therefore, you should check the file before removing it from your computer. In case you are not sure about the legitimacy of file extension, run a scan with an anti-spyware program or ask an expert to examine the file to make sure you don't delete a legitimate file. But remember that a file which is installed without your knowledge is not a legitimate one. Removing files can be risky, because spyware often exploits legitimate files, and if such files are not removed properly they can seriously damage your system.

Here's a list of features that will help you to define whether the file is legitimate:

First examine the description, the product or the company signature – if signature is absent, misspelled or modified there is a high risk that the file is illegitimate.
At initial activation an illegitimate file opens a small window and immediately closes under the cursor. This process is called dummywin.exe and proves the illegitimacy of a file.
A file can get injected when cursor moves on the window and in this way activates the process. Usually certain files will display a notification.
On a powerful PC the window will display and close instantly before you can even react.
You can check information on the file online, this will reduce the risk of removing a legitimate program.

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