Posts Tagged ‘Malware’

Geek Tip: Send Sensitive Stuff over Email as Images

Tuesday, April 14th, 2009

If you have to use email to send highly sensitive material to someone, convert the information into an image (e.g., a PDF, JPEG, TIFF, GIF, etc.).  Doing so will add a significant layer of protection against malware that is programmed to automatically search email for anything looking like SSNs, passwords, bank account numbers, and the like.  Likewise, if you insist on storing highly sensitive information on your computer, that should be stored as an image as well.

If you have Adobe Acrobat (or other PDF maker), you can easily convert a Word doc into a PDF image file.  (Warning — be careful not to create a PDF with ”embedded text.”  If you can search a PDF, then it’s got embedded text, ripe for the harvesting.)  A quick and dirty (and free) way to convert a Word doc into an image is to use the “Print Screen” function to add an image of your screen to your Clipboard.  You can then paste the screen image into another Word doc that you can save and email.

Note — when you save a doc as an image, you will no longer be able to search the body of the document.  Keep that in mind when you name and store the doc on your PC.

Good luck!

Two Stupid Geek Tips: Printers and Malware

Wednesday, April 1st, 2009

First Tip:  What do you do when you accidentally start printing out a 100-page document, when you only meant to print one page?

1. Don’t turn off the printer (or yank the plug) – you’ll get the mother of all printer jams.

2. Don’t try to cancel the print job from your computer — it’s too slow.  Your printer is going to spit out 20-plus pages before it finally stops.

Here’s the answer — pull out the paper tray.  (Or if you don’t have a paper tray, just pull out the paper — but not the piece that’s currently being printed on.)  Your printer will finish the page it’s on and then tell you it’s out of paper.  Now’s the time to cancel the print job from your computer.  After the print job has been canceled, now’s the time to unplug the printer (to clear all those stored pages).

Second Tip:  What do you do if you’re surfing the internet and a strange window pops up, telling you that you need some anti-spyware or other security product?

1. Don’t even think for a second of following the link — you’ll be sorry!

2. Don’t try to close the popup window, or click the “cancel” button — it could be a booby trap!

Here’s the answer (for users of Windows XP and Internet Exporer, anyway) — go into Task Manager, Processes, and immediately use “End Process” to shut down all instances of iexplore.exe.  With luck, you’ve avoided infection.  (But it may already be too late – make sure your security software is up to date, and do a full scan as soon as possible.)

Hope this helps!

Malware: Be afraid. Be very afraid…

Sunday, July 13th, 2008

Yesterday, I Googled my own blog and found a link to an unfamiliar site.  I clinked on the link and…

All of a sudden, my computer starts downloading a *pile* of random crap.  I click the “cancel” button, but the stuff keeps pouring onto my hard drive.

Moments later, a popup window announces that my computer is infected, and provides a link to a website to purchase something called “Antivirus XP 2008.”  The window starts popping up every couple of minutes.

Here’s the really scary part — all the crap loaded onto my computer manages to do the following:

  1. It changed my Desktop to a hideous bright blue with a yellow rectangle in the middle telling me that my computer is infected.
  2. It changed my Internet Explorer home page to their page.
  3. It added links to my Quick Start menu and Desktop.
  4. It disabled Task Manager — so I can’t stop the stupid thing from running.
  5. It disabled Registry Edit — so I can’t open the registry to try to fix the problem.
  6. It removed the “Run” button from the Start Menu, so I can’t run any DOS commands.
  7. It removed the “Control Panel” button from the Start Menu, so I can’t change my PC’s settings.
  8. It removed the “Search” button from the Start Menu, so I can’t look for their files to delete them.
  9. It changed the “My Computer” directory to hide the C: drive, so I can’t find their files and delete them.
  10. It wiped out all earlier System Restore points so that System Restore is now useless.

There were probably other things that I didn’t even notice.

The first rule when this kind of thing happens is:  DON’T PANIC.  Don’t start deleting stuff.  Don’t try to edit your registry.  If you have HijackThis, you can print out a report, but don’t start zapping random-looking files.  It is surprisingly easy to brick your computer once you start messing with system files.

Leave the infected computer alone.  Go to another computer and start Googling.  (What?  You *still* only have one computer?  Seriously, dude, go to www.dfsdirectsales.com, eBay, or wherever, and buy a cheap second computer.  It is so worth it.)

My Googling efforts uncovered the following:

  1. Antivirus XP 2008 is the latest in a long line of malware that is designed to extort money from PC users desperate to get rid of all of the annoying pop-ups.
  2. AVXP comes from the former Soviet Union — be *very* careful if you ever see any URL that ends in .su.
  3. Although it is unbelievably obnoxious, AVXP doesn’t seem to harm any of the data or software on your computer.
  4. I gather that if you pay their blood money, the software they sell you will solve the problem (but will undoubtedly put you on some sort of “sucker” list on which you will remain for the rest of time).
  5. My understanding is that AVXP only detects and removes fake security threats that AVXP itself placed onto your computer during the initial attack.  Therefore, as I understand it, there is no reason to get the software, other than to get rid of the problem that they themselves created.
  6. Other commercial anti-malware products may also work.  I suspect, but have no proof, that some of those commercial products (which usually go for something like $29.95 per license) are in cahoots with AVXP.
  7. However, you can get rid of AVXP for free (really, for free) – www.malwarebytes.org has a free anti-malware program that, much to my intense astonishment, joy, and gratitude, solved the problem completely.
  8. Also free: SUPERAntispyware (www.superantispyware.com).  One site recommended running the free version of this product in Safe Mode after you get rid of AVXP.  (To enter Safe Mode, reboot your PC while pressing F8.)
  9. And: BitDefender (http://www.bitdefender.com/scan8/ie.html).  They have a 100% free scan you can run at the end to make sure you’ve gotten rid of any last remnants of AVXP.
  10. I urge you to use Google (or whatever search engine you prefer) to double-check and confirm everything in this post before trying to apply any of it.

Good luck!