A protocol or its implementation supports interaction between
					multiple actors and allows those actors to negotiate which algorithm should be
					used as a protection mechanism such as encryption or authentication, but it does
					not select the strongest algorithm that is available to both
					parties.When a security mechanism can be forced to downgrade to use a less secure
						algorithm, this can make it easier for attackers to compromise the software
						by exploiting weaker algorithm. The victim might not be aware that the less
						secure algorithm is being used. For example, if an attacker can force a
						communications channel to use cleartext instead of strongly-encrypted data,
						then the attacker could read the channel by sniffing, instead of going
						through extra effort of trying to decrypt the data using brute force
						techniques.