So someone in /v posted the infamous 3 MB anarki.png. As I didn't know about it (I haven't usually browsed /v or /x) I clicked the image in safari.
Now after 30 mins I lurked and I found out that it was something that gives you a virus which triggers a screamer in random time on your computer.
But I didn't find any unquestionable truth to it that it is just a meme or is it true?
So am I fucked /x or is it just "le epic meme"?
I don't think that I could get a virus just by clicking on a pic on 4chan and not downloading anything - if anybody could then it would be a daily thing I'm sure. But I'm kind of a paranoid idiot and also not good with comps.
No one here will tell you this, but screamer viruses don't exist. At least not yet, there are no documented screamer viruses. 4chan is a big enough place that if one was to go around here, it would be documented. Also never save pics with the .js extension if you are told to do so. I'm just here to spread some logic.
It's a meme. Well, it is possible theoretically, but that doesn't mean it's realistic in any way. Let me explain. The images you see are rendered by your browser. Some component deep inside Safari is responsible for taking the raw data that is received from 4chans servers and building a human readable presentation of it, so you can look at your porn. If this component had a flaw, that allows certain raw data to be interpreted by it as executable code, not as data--that would mean you could execute code on a computer viewing an image file that was crafted for this purpose.
A real world example for this would be Skype on OSX. Some time ago there was a flaw that would crash Skype when you sent a special string to it (you could only trick it into crashing however, not into executing code). It was fixed rather quickly.
There are almost no bugs of this sort seen in browsers, and what you are talking about is such a freak exploit vector that it can be safely said that the screamer image is just an urban internet legend. In addition, anyone finding such a bug wouldn't waste it on something stupid as that. Those things fetch really big money. But only before they are discovered widely of course!
I have many more, and I do post them sometimes. That's what an image board is for after all. If I get banned for it, okay. I'm sure the mods know best what kind of discourse they want here.
On that note, let's keep talking about computer-related /x/ things. Regarding OP; Did you know that this kind of rendering-vulnerability is the reason people send spam mails with Word- or PDF-documents? Those renderers are far more complex, and thus there are quite a bit of exploits for them.