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1985-08-01
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I read the following article in PC Magazine and thought it should be of
interest to all SYSOPS and BBS users :
"Warning: Someone is trying to destroy your data. Beware the sudden upsurge
in "Trojan horse" programs on bulletin boards and in the public domain. These
programs purport to be useful utilities, but, in reality, they are designed to
sack your system.
One has shown up as EGABTR, a program that claims to show you how to maximize
the features of IBM's Enhanced Graphics Adanew super-directory program. It
actually erases the file allocation tables on your hard disk. For good measure,
it asks you to put a disk in drive A: then another in drive B:. After it has
erased those FAT's too, it displays, "Got you! Arf! Arf!".
Don't run any public-domain program that is not a known quantity. Have some-
one you know and trust vouch for it. Always examine it first with DEBUG,
looking at all the ASCII strings and data. If there is anything even slightly
suspicious about it, do a cursory disassembly. Be wary of disk calls
(interrupt 13H), especially if the program has no business writing to the disk.
Run your system in floppy-only mode with write-protect tabs on the disks or
junk disks in the drives.
Speaking of Greeks bearing gifts, Aristotle said that the unexamined life is
not worth living. The unexamined program is not worth running. "
The Editors of PC
July edition Vol 4 # 15
page 33.
Food for Thought.