Security consideration: Multi-threading helps cache-based side channel attacks · Issue #1 · lars-t-hansen/ecmascript_sharedmem · GitHub

Shared memory allows the construction of a high-resolution timer (nanosecond resolution), which enables cache-based side channel attacks, such as those described in the paper "The Spy in the Sandbox -- Practical Cache Attacks in Javascript" (http://arxiv.org/abs/1502.07373). For example, key press handling code produces a detectable signature of accesses to L3 cache sets. An attacker can use timin

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Shared MemoryのProposalはサイドチャネル攻撃の問題が上手く解決できたらStage 2にいけるとのこと