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14 lines
770 B
Markdown
14 lines
770 B
Markdown
# Heuristics
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Rayhunter includes several analyzers to detect potential IMSI catcher activity. These can be enabled and disabled in your [config.toml](https://github.com/EFForg/rayhunter/blob/main/dist/config.toml.example) file.
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## Available Analyzers
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- **IMSI Requested**: Tests whether the ME sends an IMSI Identity Request NAS message
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- **Connection Release/Redirected Carrier 2G Downgrade**: Tests if a cell
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releases our connection and redirects us to a 2G cell. This heuristic only
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makes sense in the US, European users may want to disable it.
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- **LTE SIB6/7 Downgrade**: Tests for LTE cells broadcasting a SIB type 6 and 7
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which include 2G/3G frequencies with higher priorities
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- **Null Cipher**: Tests whether the cell suggests using a null cipher (EEA0).
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