Collaborate Disseminate
I am studying the SMTP protocol and follow a course materials to setup a PoC spoofed email by talking with a SMTP server of our department.
This is what I have right now:
shuaiw@shuaicpu1:~$ telnet mail.XXXXXX 25
Trying XX… Continue reading Spoofed email: can’t determine Purported Responsible Address
I am learning the general concept of network security and became aware of DNS poisoning attacks and ARP poisoning attacks. They are both due to certain cache structures.
It seems to me that NAT table in the firewall is also using a cache s… Continue reading Can NAT Table be vulnerable toward any poisoning attacks?
I am a newbie to block cipher and when learning the CBC mode, I start to understand that an IV is being used in this mode and also will be transferred to the message receiver.
So here is my question, what if the IV is tampered? CBC mode … Continue reading What if the attacker tamper the IV used in the block cipher CBC mode?