Subpoenaed PyPI says bye-bye to as much IP address data as it can
IP data for journal entries – an append-only transaction log – because these were only exposed to administrators.
"Other places where we currently still need IP data include rate limiting, and fallbacks until we have backfilled the IP data with hashes and geo data," said Fiedler."Our modern approach has evolved from using the IP data at display time to find the relevant geo data, to storing the geo data directly in the database."– adding an arbitrary value – and then hashing them – running the data through a one-way scrambling function that creates a value called a hash.
Fiedler explains that while hashing is supposed to be non-reversible, it still may be possible to undo IP address hashes by brute force because the known address space is so small. "By applying a salt, we require someone to possess both the salt and the hashed IP addresses to brute force the value," he said."Our salt is not stored in the database while the hashed IP addresses are, we protect against leaks revealing this information."of the IP address for requests via a custom header, along with broad GeoIP data , and is using that instead of the raw IP address.
Fiedler says the PyPI team will be weighing whether it can remove IP data from event history records after a period of time and whether the service can handle all its requests via CDN.asked Fastly whether it has received subpoenas for PyPI IP address data. We've not heard back. ®
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