SPAM! Definisi, Bahaya, Penanggulangannya

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Transcript presentasi:

SPAM! Definisi, Bahaya, Penanggulangannya

Apa itu SPAM?

SPAM adalah unsolicited email (email yang tidak diminta) yang dikirim ke banyak orang

Mailbomb: banyak email ke satu orang

Isi SPAM Iklan, advertensi Tawaran untuk bergabung ke MLM Undian Informasi palsu, phishing Scam, penipuan …

Contoh Spam From: daniel nando <docdan40@hotmail.fr> To: docdan40@hotmail.fr Subject: Dr.Daniel Nando. Date: Mon, 16 Oct 2006 10:44:40 +0200 Dear Friend, I am Dr.Daniel Nando. I am a medical doctor in a private hoaspital in Abijan Town ( Ivory Coast W/Africa). I got your email contact through a chamber of commerce website and will like to explain to you about a Transfer of consignment which I hope you can assist us and which will benefit both of us. I have a patient, a Sierra Leonian woman who was on admission for some Weeks in my hospital for an ill health. As a matter of fact, one night this woman called my attention and began to tell me her situations, she explained that she had to flee her country with her only son because her late husband a militery officer died in a rebel conflict in his country and since then her husbands immediate younger brother had been threatening to eliminate her and the life of her only son because one Certificate of Deposit.

Phishing From: <USbank-Notification-Urgecq@UsBank.com> Subject: USBank.com Account Update URGEgb Date: Thu, 13 May 2004 17:56:45 -0500 USBank.com Dear US Bank Customer, During our regular update and verification of the Internet Banking Accounts, we could not verify your current information. Either your information has been changed or incomplete, as a result your access to use our services has been limited. Please update your information. To update your account information and start using our services please click on the link below: http://www.usbank.com/internetBanking/RequestRouter?requestCmdId=DisplayLoginPage Note: Requests for information will be initiated by US Bank Business Development; this process cannot be externally requested through Customer Support.

Penanganan Phishing ID-CERT masih aktif dalam menangani phishing Budi@cert.or.id www.cert.or.id

Sejarah SPAM

April 1994, Canter and Siegel menawarkan jasa mereka untuk “Greencard Lottery” melalui USENET news Usenet news merupakan “bulletin board” atau forum diskusi yang paling populer pada masa itu Jumlah group di Usenet mencapai ribuan dan semua group menerima iklan Canter and Siegel itu

Cerita di belakangnya … Makanan kaleng (daging campur) dari Hormel

Lawakan Monty Python

Mengapa Terjadi SPAM?

Mengapa Terjadi Spam? “Ekonomi Internet” yang aneh Biaya untuk mengirimkan 1 email sama dengan 1000 email, atau bahkan 1 juta email Sangat murah untuk mengirimkan unsolicited emails Berbeda dengan surat biasa, dimana ada biaya untuk mengirimkan junk mail

Akibat Dari Spam Menghabiskan / memboroskan Disk (email storage) Jaringan Waktu dan produktivitas kerja pengguna Pengguna tertipu (phising)

Kesulitan Menangani Spam Filter “Subject:” atau isi email dengan kata-kata tertentu tidak berhasil Viagra VIAGRA V1AGRA Vi Agra … dan seterusnya … terlalu banyak kombinasinya Memanfaatkan “kelebihan” manusia dalam membaca kata meski ada huruf yang hilang

Kesulitan (2) Statistik (bayesian?) mulai digunakan Menggunakan email spam untuk training program pemfilter spam Hasilnya digunakan untuk mem-filter email Mula-mula berhasil Berat di mail server

Kesulitan (3) Spammer menyisipkan kata-kata atau huruf yang tidak teratur guna mengacaukan statistik Spammer menggunakan gambar (image) untuk menyampaikan pesannya

Usulan Solusi Menerapkan identitas domain dari mail server Biasanya spammer menggunakan server mail milik orang lain (relaying). Melakukan filtering terhadap server mail yang melakukan relaying RBL Sender identification Belum ada standar

Bagaimana jika …

Spammer Memiliki Server Sendiri

Head to head Database spammer? Menyerang spammer? Ada beberapa organisasi Menyerang spammer?

Meniru router? Dilarang untuk mengirimkan (originating) spam bagi pengguna dari Indonesia?

Put Cost Into Email

Intinya: Belum Berhasil

Penutup Spammer vs penangkal spam masih (akan) terus berlangsung Tingkat teknis Tingkat hukum