In Python 3.6 os.urandom went blocking [1]. As an attacker, how would you destroy the system's entropy to make these calls block (and thus make Python block)? E.g. uuid.uuid4 is now blocking [2].[1] https://www.python.org/dev/peps/pep-0524/
[2] https://github.com/python/cpython/blob/8b9c33ea9ce902f902c9d9900121010801950547/Lib/uuid.py#L759