I may have downloaded corrupt files, what should I do?

I downloaded Bitdefender ant virus software. I click on the first button "search critical location." I deleted the app but am not sure it has left. I was freeing up memory and a huge list of files started popping up. When I downloaded this program my main browser was chrome but it came directly from APP Store. I went back at it again today to see if the files were stille popping up. It's hard to notice with all the numbers. I don't want to sink into a windows base scam. How can I tell If my computer is corrupted. I have heard and read bad reviews. I just dont want my computer to be like thank
Thanks for any help because I think I may have screwed up

BitDefender itself is not classed as malware but, like the majority of anti-virus software, you simply do not need it on a Mac.
Did you delete it before or after you installed it? If you deleted the downloaded file before installation, job done. If not post back.
You may find this User Tip on Viruses, Trojan Detection and Removal, as well as general Internet Security and Privacy, useful: The User Tip seeks to offer guidance on the main security threats and how to avoid them.
https://discussions.apple.com/docs/DOC-2435
More useful information can also be found here:
www.thesafemac.com/mmg

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See this -> http://support.apple.com/kb/HT2519

Cannot install Mac OS X lion because when installing I recieved the following message:The software could not be verified. It may have been corrupted or tampered with during downloading" What can I do

I have not been able to install Max OS X Lion because in the process the following message was displayed:
"THE SOFTWARE COULD NOT BE VERIFIED. IT MAY HAVE BEEN CORRUPTED OR TAMPERED WITH DURING DOWNLOADING"
How can I solve this?
Note: I trashed the download and tried re-downloading but this effort was unsuccessful.

Since writing my original post I decided to send the following message to Mac App Store Customer Support:
"I have had to download this file from the app store at least ten (10) times. I try to install the file but I keep getting the message "The software could not be verified. It may have been corrupted or tampered with during downloading."
I then delete the same file and try another attempt at a different time of day. Most recently following Apple Support's advice I contacted my ISP to clear the file cache but they could only clear my browser cache. I have deleted my com.apple.appstore. folder which contains app store cache, also com.apple.appstore.plist and tried again to no avail. I have wasted hours doing all this and I now want my money back please. You can keep this software update until you release it on disk like Snow Leopard which installed like a dream. I'm very disappointed with Apple that they expect the purchaser to do all the work trying to diagnose their software installation issue. Nice idea but poorly executed has been my experience."
I received this message which has confirmed my refund request:
Julia here from the iTunes Store. I understand that you received an error message and have been unable to install OS X Lion. I know how eager you must be to have this resolved, and I will be happy to help in any way that I can.
Please accept my sincere apologies for the frustration this download has caused. Since you were unable to enjoy this purchase, I have gone ahead and issued a refund. In five to seven business days, a credit of £20.99 should be posted to the credit card that appears on the receipt for that purchase.
If you have any other questions or concerns regarding this issue, please reply so I can assist you further. Thank you for being an iTunes Store customer.
Sincerely,
Julia
iTunes Store/Mac App Store Customer Support
Perhaps I'll wait for a disk to become available or see if a download to a pen drive at an Apple store is possible.

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Welcome to the Apple Community.
Try deleting the problematic file (electing to remove original file if/when prompted) and then re-downloading the file from the iTunes store.
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If the problem re-occurs, select the content which is causing a problem and use the 'Report a problem' button in Your Purchase History using your computer.

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The software could not be varified.it may have been corrupted or tempered during downloading

i have already purchase mac os x lion .it was now saved in appstore on my mac.but i could not able to install it.

The file may have been corrupted when you downloaded it, go to Applications and find the installer for Lion. Trash it. Restart App Store, it should show up for Install. Re-download it. and try and re-install it.
Make sure you use the same apple ID account and pass word as before.
Useful links:
http://www.apple.com/support/lion/installrecovery/
http://support.apple.com/kb/HT4718

Can't download the latest iTunes. A window pops up... The update could not be verified. It may have been corrupted or tampered with during downloading. The update will be downloaded and checked again the next time that Software Update runs. No iTunes now.

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I was in your same situation with 14 downloads and 14 attempts.
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BUT, what I also did was to go into Applications, click on the Lion installer, Get Info, and give yourself custom priviliges to Read And Write.
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The software could not be verified. It may have been corrupted or tampered with during downloading.

When trying to download the New Lion Software from the App Store I get this. The software could not be verified. It may have been corrupted or tampered with during downloading. I am signed in as the administrator - what do I do?? Thanks

The couple of times I got a message like that, repairing permissions on the boot volume fixed the problem.

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Downloaded latest OS X and installed on my Mac Book Pro (early 2008). No problems.
Then attempted to install on my Mac Mini 2011 and continuously getting the following message:
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I noticed that I am not the only one...
Anyone with a solution.
So far all I see are various attempts by people, some successful others not.
This should not be a frustrating complicated ordeal!!!
Dr Nir Joseph Hus MD., PhD.
General Surgery,
Trauma Surgery Critical Care.

Yup, the safe mode/repair/redownload/install finally solved it - had to do it after midnight as all the 4gig downloads have already trashed my 60gig internet limit for this month, installed REALLY slowly bugt eventually at 0330 i had working Mountatin Lion on my Macbook.
This has to be the most tedious upgrade, Mac OR Windows, I've ever done. Takes me back to inserting 15 floppies for sheer inconvenience, and from the numbers reporting this problem, it's more than an occasional glitch. And for some reason the download always fails if left unattended, even if all the sleep modes, etc, are negated.
3/10 to Apple this time around.

I can't install OS x lion, The software could not be verified. It may have been corrupted or tampered with during downloading.

I can't intall the OS lion. is show me this message, The software could not be verified. It may have been corrupted or tampered with during downloading.?

I encountered the same error "…can't be verified…" error on my 2010 MBP too. Tried six times and finally I could get it installed. Here's what I did:
Went to "Users & Groups" in System Preferences, checked that the Apple ID specified for the current user is the same Apple ID I used in the download purchase of ML from the App Store.
Rebooted in Safe Mode.
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Downloaded ML at midnight (and the download was significantly faster!)
Rebooted in Normal Mode.
Ran the ML Installer.

I may have downloaded corrupt files, what should I do?

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