What Is a Block Cipher & How Does It Work?
Block ciphers help protect everything from files on your device to data moving across the internet. They turn readable information into encrypted data that should be useless to anyone who…
Sayb Saad
Sayb Saad is a privacy and cybersecurity writer at PIA who doesn’t take feature lists at face value. With more than five years of experience covering VPNs and digital security, he prefers to test tools himself, dig into how they work, and translate the findings into advice people can actually use. When he’s away from the screen, he recharges outdoors or hangs out with his feline sidekick.
Posts by Sayb Saad:
Snapchat Scams: Types, Warning Signs, and How to Stay Safe
A Snapchat scam can look like a normal chat right up until someone asks you for money, a login code, or private information. The conversation can feel genuine, which is…
Symmetric vs. Asymmetric Encryption: What’s the Difference?
If symmetric encryption is so efficient at protecting data, why do secure systems bother with asymmetric cryptography at all? Because the two approaches solve different problems, and modern security often…
What Is a VPC? How Virtual Private Clouds Work
Businesses often run apps and store data in the public cloud, which can create challenges when you want them to connect or work as a single infrastructure. A virtual private…
What Is ECDSA? Everything You Need to Know
Every time your browser indicates that a site is using HTTPS, the site needs to prove it’s what it claims to be. Digital signatures do that job. They also let…
Web2 vs. Web3: Key Differences and Future Outlook
Web2 and Web3 are different approaches to building and running online services. This guide explains what they are, how they differ in practice, and what those differences mean for you.…
What Is a Backdoor Attack? How It Works, Types & Prevention
Backdoors can be difficult to spot because they may give an attacker access without triggering security checks. If that access remains unnoticed, the attacker can keep using the affected system.…
What Is Bluejacking? How It Works and How to Spot It
Did you see an odd message pop up on your phone over Bluetooth and wondered if you've been hacked? You're not alone. Bluejacking has confused and startled phone users since…
How to Secure Home Wi-Fi: A Complete Guide
Your router controls every device on your home network, so a few weak settings can expose your whole household to unauthorized access. Securing it comes down to three things: controlling…
Is Grok AI Safe? What to Know About Privacy & Safety
Whether or not Grok is safe usually depends on who is using it and what they’re using it for. You may be a parent concerned about whether it’s appropriate for…