By the end of October 2025, a significant milestone in internet security was reached with the majority of human-initiated traffic with Cloudflare using post-quantum encryption to counter the potential threat posed by quantum computers. This progress marks an ongoing transition toward post-quantum cryptography, which aims to safeguard against quantum computers that excel in solving specific problems, like breaking widely used cryptography such as RSA and elliptic curves. While current quantum computers are not yet capable of decrypting existing cryptography, the risk of "harvest-now-decrypt-later" attacks necessitates a migration to post-quantum standards. Advances in quantum hardware, such as Google's achievement of a scalable logical qubit, and software optimizations, notably Craig Gidney's work reducing the required qubits to crack RSA-2048, have brought this migration into sharper focus. Despite the challenges of adapting protocols like TLS for post-quantum cryptography, progress is being made, with over half of internet traffic now protected by post-quantum key agreements. However, migrating to post-quantum signatures presents more complexity due to larger data sizes and the need for new standards, prompting ongoing exploration of efficient solutions like Merkle Tree Certificates. While regulatory timelines are set for 2030-2035, the path to a fully quantum-secure internet remains gradual, requiring vigilance and adaptation from organizations worldwide.