|The AOL Instant Messenger client is an instant messaging application providing connectivity with the AOL Instant Messenger service. Users can talk online with other people connected with the service, transfer files up to 10mb, message a cell phone, and exchange photos, voice and video content.
Most conversations using the AIM client are simple typed text messages being sent back and forth, but users ofter transfer files with this service. This SonicWALL signature can detect login to the AIM service.
Note that some other messenger clients integrated the AIM client into their own service, like Apple's iChat. This signature will indicate and can prevent file transfer using those client applications.