Definition of "spimmer"

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

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