From owner-freebsd-security@FreeBSD.ORG Sat Jun 12 11:16:32 2004 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 9CFD716A4CE for ; Sat, 12 Jun 2004 11:16:32 +0000 (GMT) Received: from ns.pro.sk (proxy.pro.sk [212.55.244.46]) by mx1.FreeBSD.org (Postfix) with ESMTP id 752F443D2D for ; Sat, 12 Jun 2004 11:16:31 +0000 (GMT) (envelope-from prosa@pro.sk) Received: from peter (Ucto [192.168.1.53]) by ns.pro.sk (8.12.9p2/8.12.9) with SMTP id i5CBFjQA012972 for ; Sat, 12 Jun 2004 13:15:45 +0200 (CEST) (envelope-from prosa@pro.sk) Message-ID: <016301c4506e$947644e0$3501a8c0@pro.sk> From: "Peter Rosa" To: "FreeBSD Security" Date: Sat, 12 Jun 2004 13:15:33 +0200 X-Priority: 1 X-MSMail-Priority: High X-Mailer: Microsoft Outlook Express 6.00.2800.1409 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1409 X-RAVMilter-Version: 8.4.3(snapshot 20030217) (ns.pro.sk) Subject: Hacked or not ? X-BeenThere: freebsd-security@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Security issues [members-only posting] List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 12 Jun 2004 11:16:32 -0000 Hi all, please advice me - I was on holidays for one week. After return I found in security mails from router (chkrootkit) following message: Checking `lkm'... You have 1 process hidden for readdir command You have 1 process hidden for ps command Warning: Possible LKM Trojan installed It apeared only onece. From previous and next days reports, the message is not present. How could I be sure, the machine is not hacked ? Many thanks for any response. Peter Rosa