Which was the worst computer virus you have ever gotten?

Anubis

No Lifer
Aug 31, 2001
78,712
427
126
tbqhwy.com
Viral pneumonia - that almost did kill me

for computers i have no idea its been soo long, it was most likely something back in the wqin 98 days, but nothing so sever that it couldnt be fixed by a reinstalling 98 over itself
 

40Hands

Diamond Member
Jun 29, 2004
5,042
0
71
I got my one and only computer virus back when I was in high school. It was called Stealth.B. Text
 

shilala

Lifer
Oct 5, 2004
11,437
1
76
Originally posted by: Anubis
Viral pneumonia - that almost did kill me

for computers i have no idea its been soo long, it was most likely something back in the wqin 98 days, but nothing so sever that it couldnt be fixed by a reinstalling 98 over itself

I did two bouts of bacterial pneumonia. The first one almost killed me, the second one just made me wish I was dead. It ruined our trip to Florida. I ended up getting pushed through the airport in a wheelchair on the way home.
 

Amused

Elite Member
Apr 14, 2001
57,059
18,428
146
I have never had a computer virus.

And the only time I ever had spyware (not cookies) was when I stupidly, but intentionally downloaded Comet Curser years ago.
 

HumblePie

Lifer
Oct 30, 2000
14,665
440
126
I once got the Monke Virus that some schmuck at IBM was putting on brand new 3.5" floppies at the time. You stick the disk in the machine and when it spun up to access the FAT, you DOS system got infected. Yay.

Oh crap.. I'm talking about DOS viruses. Really, I'm not that old! On one system it corrupted completely but on the second system we had Thunderbyte, DOS virus protection installed.
 

jadinolf

Lifer
Oct 12, 1999
20,952
3
81
The only computer virus that I got was back in my noob days.

It was the anti exe virus and was put there by a small computer shop when they tried to fix the computer.
I also infected many of my floppies because I did not write protect many of them. What a dummy.

Now I fix my own computers.
 

gsellis

Diamond Member
Dec 4, 2003
6,061
0
0
Never had one. Best one we triaged was 1/2. Recovered about 35% of the data.

One_Half is an advanced multipartite virus. It infects the master boot record (MBR) on the first physical hard disk (drive 80h, the C: drive) and .EXE and .COM files. One_Half uses stealth techniques to hide the MBR infection and polymorphic techniques to make file detection and removal difficult to impossible. When the virus is in memory, a clean copy of the MBR is displayed and the infection size is hidden when files are displayed.

The MBR infection routine is rather generic. After initial infection, One_Half uses the last eight sectors of side 0, track 0 to store its additional infection code and a clean copy of the MBR and partition table. A major concern is that One_Half slowly encrypts any hard drive that it infects. When an infected hard drive is cold booted, One_Half encrypts two cylinders at the end of the hard drive with an XOR routine and a random key (it does not encrypt the diagnostic cylinder). Each successive cold boot from the hard drive results in two more cylinders becoming encrypted . These encrypted cylinders are available to the user only as long as One_Half remains in memory. When it has encrypted approximately one-half of the hard drive, One_Half displays the following message:

Dis is one half.
Press any key to continue...

One_Half poses a significant problem for anti-virus programs that use generic repair or inoculation techniques. Although a generic repair successfully removes One_Half from an infected MBR, all data in the encrypted areas is lost. For example, running FDISK/MBR removes the virus, but all data in the encrypted area of the drive is lost.

One_Half only infect files with a .COM or .EXE extension. During the file infection routine, One_Half first scans the filename for text strings relating to anti-virus software. If it finds SCAN, CLEAN, FINDVIRU, GUARD, NOD, VSAFE, or MSAV in the filename, it does not infect. If infection is successful, One_Half inserts portions of itself into random points within the host file and appends the bulk of the encrypted infectious code.

One_Half appears to be generally compatible with most versions of DOS and Windows 3.1. Some Windows configurations do not load when One_Half is memory.
 

neutralizer

Lifer
Oct 4, 2001
11,552
1
0
Never had one, but friend infected me with a trojan that rode on top of a program before and started snooping around my data, but I knew the installation looked funny and removed it before he could really look at anything.