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You are here: Home / News / Peretas Pertahanan Email Microsoft

Peretas Pertahanan Email Microsoft

October 7, 2022 by Eevee

Semakin banyak penyerang siber yang berfokus pada pembuatan serangan yang dikhususkan untuk melewati keamanan default Microsoft

“Banyak peretas menganggap email dan Microsoft 365 sebagai titik awal kompromi mereka, [sehingga mereka] akan menguji dan memverifikasi bahwa mereka dapat melewati keamanan default Microsoft,” menurut laporan baru dari Avanan yang menandai peningkatan dalam telemetri pelanggannya. email berbahaya yang mendarat di kotak email yang dilindungi Microsoft.

Beberapa angka yang menarik dalam laporan, diperoleh dari analisis 3 juta email perusahaan pada tahun lalu, termasuk:

Sekitar 19% email phishing yang diamati oleh Avanan melewati Microsoft Exchange Online Protection (EOP) dan Defender.
Sejak tahun 2020, tingkat phishing yang terlewatkan Defender di antara pelanggan Avanan telah meningkat sebesar 74%.
Rata-rata, Defender hanya mengirimkan 7% dari pesan phishing yang diterima oleh pelanggan Avanan ke folder Junk.
Kabar baiknya: Microsoft menandai dan memblokir 93% upaya kompromi email bisnis.

Microsoft menangkap 90% email yang dijebak dengan lampiran yang sarat malware.
Sekali lagi, angka tersebut menunjukkan evolusi phishing dan fakta bahwa penyerang semakin sering menggunakan taktik seperti memanfaatkan layanan yang sah untuk menghindari menyertakan tautan yang jelas-jelas berbahaya dalam email, menggunakan teknik penyamaran seperti URL cantik, dan menghindari lampiran sama sekali.

Untuk mempertahankan diri terhadap serangan yang dibuat khusus ini, organisasi dapat menggunakan pendekatan dasar pertahanan mendalam dengan empat cabang utama, menurut Roger Grimes, penginjil pertahanan berbasis data di KnowBe4.

Cabang-cabang tersebut meliputi: Fokus yang lebih baik untuk mencegah rekayasa sosial, menggunakan kombinasi kebijakan, pertahanan teknis, dan pendidikan terbaik; patch perangkat lunak dan firmware, terutama yang terdaftar di Katalog Kerentanan yang Diketahui CISA yang Dieksploitasi; menggunakan otentikasi multifaktor tahan phishing (MFA); dan menggunakan kata sandi yang berbeda dan aman untuk setiap situs dan layanan di mana MFA tidak dapat digunakan.

“Tidak ada pertahanan lain, selain empat ini, yang akan berdampak paling besar pada penurunan risiko keamanan siber,” kata Grimes. “Kurangnya fokus dunia pada empat pertahanan inilah yang telah membuat peretas dan malware begitu sukses begitu lama.”

Sumber: Dark Reading

Tagged With: Email, Microsoft, peretas

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