[2026] PTE Academic Listening - Fill in the Blanks (Type In)

The field of modern cryptography has its roots in the ancient art of secret writing. Historically, it was primarily used for military and communications to prevent interception. Today, however, it serves as the of the digital economy, protecting everything from emails to online banking. Sophisticated encryption methods use complex mathematical to scramble data into unreadable code. While these systems are currently robust, the rise of computing could eventually render them obsolete. As a result, cybersecurity experts are now focusing on the of post-quantum encryption standards. Maintaining the of our global communication networks is more critical than ever before.