| 9606 | Slack Chat Detection via UDP | Info |
| 9605 | Slack Chat Detection - UDP #2 | Info |
| 9604 | Slack Chat Detection - UDP #1 | Info |
| 8575 | Pidgin < 2.10.10 | Medium |
| 8574 | Pidgin Client Detection | Info |
| 6944 | Viber Client Detection | Info |
| 6941 | KakaoTalk Mobile Application Detection | Info |
| 6940 | Kakao Mobile Application Detection | Info |
| 6938 | WhatsApp Client Detection | Info |
| 6923 | LINE Chat Client Detection | Info |
| 6921 | WeChat Mobile Application Detection | Info |
| 6234 | Meebo Messenger Detected | Info |
| 5980 | Yahoo! Messenger Detection | Info |
| 5898 | Skype Detection (User-Agent) (deprecated) | Low |
| 5362 | Skype < 4.2.0.155 URI Handler Security Vulnerability | Medium |
| 5298 | Pidgin < 2.6.5 Information Disclosure Vulnerability | Medium |
| 5168 | Pidgin < 2.6.1 Multiple Vulnerabilities | Medium |
| 5137 | Pidgin < 2.5.9 Buffer Overflow | High |
| 4778 | Trillian < 3.1.12.0 Multiple Vulnerabilities | High |
| 4405 | ICQ 6 HTML Code Generation Remote Format String | High |
| 4404 | ICQ 6 Version Detection | Info |
| 4310 | Skype Technologies < 3.6.0.216 skype4com URI Handler Remote Heap Corruption | Medium |
| 4280 | Trillian Version Detection | Info |
| 4215 | AOL Instant Messenger <= 6.1.41.2 Control Notification Window Script Injection | Medium |
| 4211 | Microsoft MSN Messenger and Windows Live Messenger Remote Code Execution Vulnerability (942099) (deprecated) | High |
| 4210 | Microsoft MSN Messenger and Windows Live Messenger Remote Code Execution Vulnerability (942099) (deprecated) | High |
| 4199 | Yahoo! Messenger < 8.1.0.419 YVerInfo ActiveX Buffer Overflow | Medium |
| 4197 | Windows Live Messenger < 8.1.0178 Video Processing Overflow | Medium |
| 4196 | Windows Live Messenger Version Detection (deprecated) | Info |
| 4159 | AIM Express Client Detection | Info |
| 4144 | Trillian < 3.1.7.0 Multiple Vulnerabilities | Medium |
| 4104 | AOL Instant Messenger 6 Version Detection | Info |
| 4103 | AOL Instant Messenger <= 6.1.32.1 SIP INVITE Message DoS | Low |
| 4102 | Trillian < 3.1.6.0 Multiple Vulnerabilities | Medium |
| 4084 | Windows Live Messenger Version Detection | Info |
| 4081 | Yahoo! Messenger User Enumeration (deprecated) | Info |
| 3977 | Trillian < 3.1.5.0 Multiple Vulnerabilities | Medium |
| 3939 | MySpaceIM Chat Detection | Info |
| 3772 | Skype Technologies < 1.5.0.80 NSRRunAlertPanel Function Format String (Mac OS X) (deprecated) | High |
| 3700 | Yahoo! Messenger < 8.0.0.863 File Extension Spoofing | Medium |
| 3665 | Yahoo! Messenger <= 7.5.0.184 Multiple Vulnerabilities | Low |
| 3627 | Skype Technologies < 2.5.0.78 Arbitrary File Download | Low |
| 3268 | Skype Technologies Multiple Buffer Overflows | Critical |
| 3199 | IndiaTimes Instant Messenger ActiveX RenameGroup Function Overflow | Medium |
| 3160 | Gaim < 1.3.2 Multiple Vulnerabilities | Low |
| 3070 | Skype Temporary File Arbitrary File Overwrite | Medium |
| 3012 | Gaim < 1.3.1 Multiple Vulnerabilities | Medium |
| 3008 | AOL Instant Messenger Remote Malformed GIF DoS | High |
| 2894 | Gaim < 1.3.0 Multiple Vulnerabilities | Medium |
| 2888 | AOL Instant Messenger Font Tag sml Parameter Remote DoS | Medium |