I know my system backwards and forwards and I do not like noticing stuff running in the background that I don't recognize. Recently I was checking out the Task Manager (right click on the clock, and select Task Manager or press Ctrl-Alt-Del and click Task Manager) and noticed TWO copies of "netsession_win.exe" running with a peak memory working set of about 25 megs. Ok, what's this?
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You can always right click on suspicious processes and click Open File Location. This little tip is often enough to jog your memory and go, "Oh, THAT."
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Hm, that dropped me into C:\Users\scottha\AppData\Local\Akamai. I know who Akamai is. They are a download accelerator used by lots of companies. Kind of the first large Content Distribution Network or CDN.
Am I sure it's them and not someone evil trying to fake me out? Right click on netsession_win.exe, then Properties.

Well, they have a legitimate digital signature, interestingly they signed this on the 11th of November. Looks like this was recently installed automatically by something, perhaps Flash or Adobe Acrobat.
I wonder if someone needs to tell Akamai that their freshly installed service that just (kinda, a little) snuck on my system has a digital certificate that expires in 5 weeks. Are they or one of the companies that uses them going to update this client and cert soon?
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Running services.msc from Start | Run tells me that this runs as an Automatic Service. At least it's a Delayed Start so it doesn't slow down my boot.
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The only thing I installed on my machine on the 11th was an automatic update to Adobe Flash. That's my #1 suspect right now as it's the only thing that I ran as Administrator that day.
For now, I'll keep it on my machine because it:
- Is from a reputable (so far) company
- Is known to be used by folks like Netflix, etc to speed up downloads
- Has an uninstall available in Installed Programs
- Feels legit
- Has a control panel icon and a Read Me with lots of info about what it does (except who installed them)
- Has a customer bill of rights online with details with test demo pages about their API.
I will say this, though. Whatever program installed it should have told me first before chaining it in. At least with Evil Toolbars I can see them. Not cool Akamai. Who installed you?
You're on notice.
© 2011 Scott Hanselman. All rights reserved.