* <tt>browser.safebrowsing.downloads.remote.timeout_ms</tt>: timeout for the remote lookups
* <tt>browser.safebrowsing.malware.enabled</tt>: enables malware checks (required by application reputation)
* <tt>urlclassifier.downloadAllowTable</tt>: list of trusted certificates which suppress remote lookups (Windows-only)
* <tt>urlclassifier.downloadBlockTable</tt>: list of URLs serving malware binaries