IT infrastructure security, application security, and data (at rest, transit, and usage) security are the top three security challenges, and there are security solutions approaching the issues at different levels and layers. Access-control mechanisms, cryptography, hashing, digest, digital signature, watermarking, and steganography are the well-known and widely used aspects of ensuing impenetrable and unbreakable security. There's also security testing, and ethical hacking for identifying any security risk factors and eliminating them at the budding stage itself. All kinds of security holes, vulnerabilities, and threats are meticulously unearthed in to deploy defect-free, safety-critical, and secure software applications. During the post-production phase, the security-related data is being extracted out of both software and hardware products, to precisely and painstakingly spit out security insights that in turn goes a long way in empowering security experts and architects to bring forth viable solutions to ensure the utmost security and safety for IT infrastructures and software applications.