spimmer

plural spimmers

1. One who sends spim (unsolicited instant messages).

   Spam in e-mail isn't new. But as barriers to it have succeeded, spimmers have taken fresh aim at IM.

   2004, Newsweek, volume 143, page iii

   3 more examples

   Most forecasters are predicting that spim will spin out of control as soon as spimmers find a way to abscond with large numbers of IM screen names, which are not as readily available as e-mail addresses.

   2004, Larry Long, Personal Computing Demystified, page 225

   Another threat to the use of IM is a phenomenon known as spimming. Spimming is to IM as spam is to e-mail. Some aggressive spimmers learned how to take over one IMer's contact list — threatening a company's entire IM system!

   2007, Bill Daley, Computers Are Your Future, page 70

   Spimmers clog mobile devices by sending tones^([sic]) of unwanted SMS or MMS and hence making the devices useless.

   2012, Natarajan Meghanathan, Nabendu Chaki, Dhinaharan Nagamalai, Advances in Computer Science and Information Technology