Research

What is a double VPN and is multi hop worth it?

A double VPN routes traffic through two servers so no single operator sees both who you are and where you go. See what it adds, costs and when to skip it.

What is a DNS leak and how do you stop one?

A DNS leak sends your name lookups outside the VPN or private path you meant to use. Learn why it happens, how to test for it and how to close it.

What is a credential based attack and how do you stop one?

A credential based attack uses stolen, guessed or reused logins, not malware. Stop it with multi factor authentication, breach screening, account audits.

What is a computer worm, and how is it different from a virus?

A worm copies itself across networks with no host program or user action; a virus needs a host. See how the 1988 Internet worm spread and how to stop one.

What is a cloud VPN and how is it different from a VPN gateway?

A cloud VPN is a managed tunnel endpoint linking your network to a cloud network, usually IPsec. What the provider runs and what you must still secure

What is a CASB (cloud access security broker) and when do you need one?

A CASB sits between users and cloud services to find shadow IT, enforce policy and spot account misuse. See what it does, where it stops, how to choose.

What drives the cost of SD-WAN, and how do you compare quotes?

SD-WAN cost is more than device price. Learn the cost drivers, the questions that expose hidden fees, and how to build a like-for-like quote comparison.

What does threat protection mean, and what should it include?

Threat protection is the set of controls that prevent, detect and contain attacks. Use the NIST CSF functions to see what a complete program covers.

What does the NCSC expect AI to do to cyber threats by 2027?

The UK NCSC judges AI will almost certainly make intrusions faster and more frequent by 2027, mainly via vulnerability research. Patch and monitor faster.

What does SIEM software do, and what should you check before buying?

SIEM software collects logs from many sources, normalizes them and correlates events into alerts. Use these questions to test one before you commit to it.

What does a SIEM do in a security operations center?

A SIEM gathers security data from many systems so analysts can search, correlate and alert. Its value depends on which logs you send and who tunes it.

What does a firewall do, and what can it not stop?

A firewall allows or blocks traffic between networks or hosts by rule. Learn the main types, what each can see and the attacks that walk straight past one.