Discussion-message authentication(cryptography course)

In today's world, messages are sent on a regular basis. Find an article or several that discuss how messages are tampered with or spoofed.

Remember to first post your point of view before responding to your classmates. You must respond to at least two classmates

6 points for your post, 2 points each for responses to classmates.  The same standards apply here as to the Week 1 discussion