The Department of Mathematics, St Agnes College (Autonomous), Mangaluru conducted a guest lecture on the topic “Cryptography” on 30 January 2019. The resource person was Prof. John Shera, Rtd. Pofessor, St Aloysius College, Mangaluru.. The session was very informative. He explained about coding and de coding. He also explained and shared about the life and the work of the great Mathematicians. Students gained a lot of knowledge regarding thematter.