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BlockHammer: Preventing RowHammer at Low Cost by Blacklisting Rapidly-Accessed DRAM Rows

11 Feb 2021 • Abdullah Giray Yağlıkçı • Minesh Patel • Jeremie S. Kim • Roknoddin Azizi • Ataberk Olgun • Lois Orosa • Hasan Hassan • Jisung Park • Konstantinos Kanellopoulos • Taha Shahroodi • Saugata Ghose • Onur Mutlu

Aggressive memory density scaling causes modern DRAM devices to suffer from RowHammer, a phenomenon where rapidly activating a DRAM row can cause bit-flips in physically-nearby rows. Recent studies demonstrate that modern DRAM chips, including chips previously marketed as RowHammer-safe, are even more vulnerable to RowHammer than older chips... (read more)

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Categories

  • CRYPTOGRAPHY AND SECURITY
  • HARDWARE ARCHITECTURE
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