Can I get a virus in a picture file (like .jpg etc.)? 3

• Mar 15, 2013

1
• #2

Salem

Programmer

Apr 29, 2003

2,455

GB

It's a very low threat, but there have been instances in the past. But as a way into a system, data files which contain no code at all (unlike say word documents or pdf documents) are very hard to make use of from a malware writers point of view.

I don't know if there were any "in the wild" examples of this image (as opposed to the proof of concept test cases). Perhaps ask your AV vendor if they actually detect known JPG file exploits.

If they're all your own photos uploaded from your camera, then it's even less of a problem.
Rather than skipping all JPG's (including ones you might download), perhaps just exclude the directory where you store all your temporary photos.


--
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.

 

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• Mar 16, 2013

1
• #3

sggaunt

Programmer

Jul 4, 2001

8,620

GB

I haven't checked up on this but I believe that because of the way JPGs are compressed there is lots of scope to hide other data in a jpg file.
So the answer is yes.

Steve: N.M.N.F.
If something is popular, it must be wrong: Mark Twain
That's just perfectly normal Paranoia everyone in the universe has that: Slartibartfast

 

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• Mar 16, 2013

• Thread starter
• #4

mscallisto

Technical User

Jun 14, 2001

2,990

US

@Salem

I believe you're correct in saying "very low threat" particularly since all the .jpg's are mine in origin.

Since this desktop is mainly used for pictures alone I think I'll try skipping the jpg files for a while to see how much time I save.
When I suspect a virus etc. I'll include all files.
I'll continue to see if I can actually find a concrete example of infected jpg's since I also suspect some truth in sggaunt's post.

Avira antivirus allows one to skip file types but I can't see where it allows folder skipping, I'll look again.

As for CCleaner, Glary Utils,Malwarebytes and Super Anti Spyware, I'll have to visit the help pages and look for file/folder skipping.

Thanks to Both

Sam

 

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• Mar 18, 2013

1
• #5

Sympology

MIS

Jan 6, 2004

5,508

GB

Just scan executable files (this is not just .exe's but includes stuff like .vbs .scr.....most AV do this as normal for a quick scan, until you ask to do a system full scan.

Robert Wilensky:
We've all heard that a million monkeys banging on a million typewriters will eventually reproduce the entire works of Shakespeare. Now, thanks to the Internet, we know this is not true.

http://alvechurchlounge.org.uk

 

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• Mar 18, 2013

• Thread starter
• #6

mscallisto

Technical User

Jun 14, 2001

2,990

US

I think I agree Sympology and will do such until my bones tell me it feels like I have a virus.

Thanks for the info

Sam

 

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