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LANtenna Attack

Membuat Sinyal Nirkabel dengan Kabel Ethernet untuk Mencuri Data dari Sistem Air-Gapped

October 5, 2021 by Winnie the Pooh

Mekanisme eksfiltrasi data yang baru ditemukan menggunakan kabel Ethernet sebagai “antena pemancar” untuk secara diam-diam menyedot data yang sangat sensitif dari air-gapped systems, menurut penelitian terbaru.

“Sangat menarik bahwa kabel yang datang untuk melindungi celah udara menjadi kerentanan celah udara dalam serangan ini,” Dr. Mordechai Guri, kepala R&D di Pusat Penelitian Keamanan Siber di Universitas Ben Gurion Negev di Israel, kepada The Hacker News.

Dijuluki “LANtenna Attack”, teknik baru ini memungkinkan kode berbahaya di komputer dengan celah udara untuk mengumpulkan data sensitif dan kemudian menyandikannya melalui gelombang radio yang berasal dari kabel Ethernet seolah-olah itu adalah antena.

Sinyal yang ditransmisikan kemudian dapat dicegat oleh penerima software-defined radio (SDR) terdekat secara nirkabel, memecahkan kode data, dan mengirimkannya ke penyerang yang berada di ruangan yang berdekatan.

“Khususnya, kode berbahaya dapat berjalan dalam proses mode pengguna biasa dan berhasil beroperasi dari dalam mesin virtual,” catat para peneliti dalam makalah berjudul “LANTENNA: Exfiltrating Data from Air-Gapped Networks via Ethernet Cables.”

Sebagai tindakan pencegahan, para peneliti mengusulkan pelarangan penggunaan penerima radio di dalam dan di sekitar jaringan yang memiliki celah udara dan memantau aktivitas lapisan tautan kartu antarmuka jaringan untuk setiap saluran rahasia, serta mengganggu sinyal, dan menggunakan pelindung logam untuk membatasi medan elektromagnetik agar tidak mengganggu atau memancar dari kabel berpelindung.

Sumber: The Hacker News

Tagged With: Cybersecurity, LANtenna Attack, Network Security

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