Cryptography is the practice of using mathematical algorithms to secure communications and protect information. Cryptography is used in many applications, such as online banking, secure messaging, and digital signatures. Popular cryptographic algorithms include RSA, AES, and SHA. View more Cybersecurity refers to the protection of computer systems and networks from unauthorized access, theft, damage, or disruption. Cybersecurity is an increasingly important concern as more and more sensitive information is stored and transmitted online. Popular cybersecurity platforms include McAfee, Symantec, and Kaspersky.