The only thing I ever put on a system, similar to that, was a TSO program which produced a crude picture of the one finger salute. You could put whatever message you wanted on the hand. Silly me, I had the program executing at TSO logon. Management was not amused.
-----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Peter Sylvester Sent: Sunday, October 10, 2021 9:36 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Mainframe ransomware solution [External Email. Exercise caution when clicking links or opening attachments.] On 08/10/2021 16:43, David Spiegel wrote: > Hi R'Shmuel; AMV"SH, > "... What about the Christmas Card Worm? ..." > > That was AFAIK on a VM system, not, an MVS system. > > Regards, > David > > You could have "protected" the VM systems as much as you want, if a "friend" send you an exec/script/clist and you execute it. the was actually created as small joke by a student at one of the EARN/BITNET nodes who did not see that it could escape from the site. my old friend Helmut on the neighbour node detected "patient 0". It rapidely entered vnet which was shutdown (to remove all copies afaik), earn bitnet was saved by Eric Thomas by filtering in rscs. You had to execute it, a global social attack/joke, not like the other real worm in sendmail Peter Sylvester ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Confidentiality notice: This e-mail message, including any attachments, may contain legally privileged and/or confidential information. If you are not the intended recipient(s), or the employee or agent responsible for delivery of this message to the intended recipient(s), you are hereby notified that any dissemination, distribution, or copying of this e-mail message is strictly prohibited. If you have received this message in error, please immediately notify the sender and delete this e-mail message from your computer. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
