( HAP T ERN I N E Hicrocomputm and Security in C#.NET

Generator QR Code in C#.NET ( HAP T ERN I N E Hicrocomputm and Security

SOME MORE GI ZMO CODES LAST NIGHT AND HERE THEY ARE: ### ### ###### ###### ###### ###### ###### ###### ###### ###### ######

DON'T USE THEM UNTIL THE OLD ONES DIE! THAT WAY WE WILL HAVE CODES THAT WORK FOR A LONG TIME. COMPRENDE' HERE ARE THE OLD ONES THAT STILL WORK: ###### ###### ###### ####### USE THEM IN ORDER! OK (1-25, LAST = 7, QUIT = Q) READ MSG .# 8

MESSAGE #8: WHAT ABOUT (SPACEBAR QUITS MESSAGE) MSG. LEFT BY: ANONYMOUS WHAT ABOUT ###### FOR AN OLD GI ZMO CODE (1-25, LAST =8, QUIT = Q) READ MSG.# 9

An invitation . .. "conferencing" is a kind of free-form electronic meeting of hack ers and phreaks who all gel on the same circuit, so they can all speak to one another - sometimes in groups of up to twenty at a time. AE stands for ASCII Express, a BBS for trading Apple software . ...

MESSAGE #9: CONFERENCING (SPACEBAR QUITS M ESSAGE) MSG. LEFT BY: DR. ATOMIC IF ANYBODY WANTS TO GET IN ON SOME COOL CONFERENCING, LEAVE ME YOUR VOICE # AND WHO TO ASK FOR AND I'LL GIVE YA A CALL, OR LEAVE A MESSAGE ON MY AE LIN E (555-0000) ... WE USUALLY RUN 2 OR 3

CONFERENCES A DAY, BUT WE CAN MAKE ROOM FOR MORE .... + DR. ATOMIC + (1-25, LAST = 9, QUIT = Q) READ MSG.# 10

Here are a few numbers that were found by a hacker using a modem and a scan program. He offers speculation as to their purpose . . . .

MESSAGE #10 : STRANGE COMPUTERS (SPACEBAR QUITS MESSAGE) MSG. LEFT BY: ANONYMOUS HOW ABOUT SOME HELP WITH A FEW NUMBERS MY SEARCH PROGRAM CAME UP WITH : (IF YOU KNOW ANYTHING ABOUT THEM, JUST LEAVE A MESSAGE) 555-0001 BELL TEST SIGNAL " -0002 1200 BAUD " -0003 ( ) ' E GETS A.B. " -0004 CARRIER BUT " -0005 1200 BAUD ONLY " -0006 1200 BAUD ONLY " -0007 ( ) TRY HITTING TOUCH-TONES " -0008 STRANGE COMPUTER " -0009 1200 BAUD ONLY " -0000 1200 #$ %' ! ' !!# _

Bulletin boards provide a valuable community service to all modem users. They allow people to meet and exchange ideas or information, or just to talk and socialize. Even though hackers who bother bulletin boards are generally looked down upon by other hackers, sometimes a bulletin board is still disrupted. Most hackers would not find it too exciting to crack a bulletin board - the computer involved is probably no bigger than their own,

the security is not all that great, and bulletin boards are run by dedicated computer hobbyists. People who haven't thought much about this, however, and who haven't actually tasted "real" hacking sometimes make this effort. But if a slight effort is made by the system operator, the odds are that any hacking activity could be averted - and this would be a great relief to many users of bulletin boards. The problem with security on bulletin boards is that there are Crashers in the world, and most Crashers love to crash bulletin-board systems. When a Crasher crashes a bulletin-board system, he tries either to break out of the controlling BBS software or to get the system operator's password. In the latter case, as with many mainframes, password assignment is a security problem with BBS software. On some bulletin-board systems it is essentially no problem at all to guess the system operator's password, because of the well-known procedures used to assign it. Other techniques Crashers use on bulletinboard systems include entering an unexpected character in the right place (or the wrong place, depending on your point of view), entering a number that is too large for the system to handle, or overflowing the disk space by entering too many messages. Any of these tricks may, in a crashable BBS program, send the Crasher an error message and the system prompt ... at which point he will have control over the computer system itself. When the time comes, the Crasher will probably bring about his moment of glory by formatting the disks that are currently on the system, and since formatting a disk automatically erases all information on it, this means all messages that have not been backed up (in some cases, this is all of them) will be lost forever. Also, if the system operator does not have his bulletin-board software backed up, it too may be lost. If the Crasher is more inclined to be subtle (Crashers are not known for this), he may slowly start introducing problems into the BBS. In any event, and particularly if the BBS uses a hard disk, the importance of backups should be obvious. The remaining few pages of this chapter are directed primarily at a fairly narrow group of people: the operators of bulletin-board systems. But even if you are not associated with bulletin boards at all, I think you will still find this information interesting. At the very least,