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本帖最后由 MaverickZ 于 2022-1-14 23:42 编辑 6 z9 ^' d" o a6 y" U1 c O
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, a! \. W3 B8 P( h" H双向信号放大器, 放大汽车和钥匙的信号, 让车以为钥匙在车边.0 _: j5 ^. J- s7 y$ `/ J8 y$ U; E
我现在是用faraday case钥匙包装钥匙, 回家把车钥匙扔那种铁皮的饼干盒里。
% r U0 l* i. ~. f; ]6 L我见过最搞笑的是买了宜家一种类似俄罗斯套娃的3层金属盒,把车钥匙放在最里面那个小盒子里, 实测屏蔽信号效果超一流." ~9 V7 s2 s& H- J% D8 K; O% I
https://www.thatcham.org/relay-attack/$ A! @5 q: q7 c
What is Relay Theft?6 F2 l/ P6 N) C: D* m$ J
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Relay theft exploits a vulnerability in passive keyless entry systems, which allow drivers to open and start their cars without removing the keyless fob from their pocket.- g& Y5 M( C3 p! g6 o' `9 g
7 ?( O9 a6 j$ ?! _Operating in pairs, one criminal holds a device up against the car door, amplifying the signal it broadcasts around the perimeter of the vehicle. Another stands near the front wall or porch of a home, with a device that relays the key’s signal back to his accomplice.& F w9 z( G) s( ^1 w; [ Y
4 J- L+ x- @% f9 I3 n0 y8 jThe car is effectively fooled into believing that the owner is within a defined range (usually two metres) and is approaching the car with their key. The door opens, and the signal is relayed a second time, starting the engine. Once started, the engine will not restart without the key present.
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