In challenge-response authentication, both the User ID (i. e., message 1) and the Challenge (i. e., message 2) are in cleartext, but why is challenge-response authentication still a secure authentication method that can defeat replay attacks?

What is the original authority for copyright laws

Me dangers of social media and the internetexplain what each means: 1) social media and phones have become an addiction.2) outside people have access to you all the time.3) cyberstalking4) cyberbullying5) catphishing6) viruses7) identity theft8) credit card fraud9) hacking10) money schemes

The camera still is bad even with the new iphone xr and especially in low light it is even worst because you can see the pixels more if its in low light. if all you apple customers want apple to fix this then lets fill there feedback with complaints about the