iChat Server in Apple Mac OS X Server before 10.6.3, when group chat is used, does not perform logging for all types of messages, which might allow remote attackers to avoid message auditing via an unspecified selection of message type.
From 神龙GPT (AIGC)
在Apple Mac OS X Server 10.6.3之前，使用群组聊天时，iChat Server 不对所有类型的消息进行日志记录，这可能导致远程攻击者通过未指定的消息类型选择来避免消息审计。