There&#x27;s safe and there&#x27;s FUD. Nobody will read 2^80 bytes from urandom. You&#x27;ll literally run out of time before that. It would take around 1,782,051,134 years to do on my system.<p>So if they write that there&#x27;s a vulnerability after reading 2^80 bytes - that&#x27;s great! We&#x27;re secure. If they write that you must ensure to do something after 2^80 bytes - that&#x27;s complete bullshit.