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What are zero-knowledge proofs? A complete guide
Zero-knowledge proofs (ZKPs) are a highly secure form of proving knowledge without transmitting the data itself. ZKP is often overlooked in discussions about privacy, despite its role in anonymity and...
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Zero-trust cloud security explained
Traditional corporate networks were built like castles: secure walls (firewalls and VPNs) kept threats out, and anyone inside was trusted. This castle-and-moat approach served enterprises well for dec...
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What is quantum-resistant encryption (and why you need it now)
The encryption that protects your organization’s data today will not work forever. A new kind of computer is coming that will break it. This is the quantum threat, and preparing for it now is one of...
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What to do if you lose your phone or it gets stolen
Losing your phone can definitely make you feel helpless. Your phone is how you reach friends, manage money, access emails, snap photos, and stay organized. When it goes missing, the stress goes beyond...
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Discord end-to-end encryption: Can you turn it on?
Discord is one of the most widely used chat platforms in the world. It’s popular not just with gamers but with all kinds of online communities. That said, using Discord comes with some trade-offs. T...
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VPN vs. firewall: Key differences and when to use each
VPNs and firewalls are both tools that can help you maintain your security and privacy in the face of web-based threats. That said, they work in fundamentally different ways. This guide will cover the...
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What is the Caesar cipher? Definition, history, and examples
Over 2,000 years ago, Julius Caesar had his own way of keeping sensitive messages out of enemy hands. This ancient code, known as the Caesar cipher or Caesar encryption, is one of the earliest known e...
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Is my phone listening to me? A step-by-step privacy check
Stories of phones listening to people and displaying ads for products they were just talking about have become widespread. Despite most major platforms stating the opposite, people often worry that th...
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How to turn on end-to-end encryption on iPhone
Your iPhone holds a vast amount of sensitive data: everything from messages and photos to health and financial records. Some types of data (like health data, passwords stored in iCloud Keychain, and p...
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Most secure messaging apps in 2025: Ranked and reviewed
Many messenger apps aren’t secure: they might quietly collect metadata such as your contacts, chat length, device fingerprints, and location trails to feed ad networks and data brokers. And if your ...
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