Josh Fruhlinger

Josh Fruhlinger is a writer and editor who lives in Los Angeles.

2fa explained: How to enable it and how it works

What is a computer worm? How this self-spreading malware wreaks havoc

What is a computer worm? How this self-spreading malware wreaks havoc

A worm is a form of malware (malicious software) that operates as a self-contained application and can transfer and copy itself from computer to computer.

What is open source software? Open source and FOSS explained

What is open source software? Open source and FOSS explained

We trace the rise of free open source software—code that can be freely modified and shared—from philosophical outlier to modern powerhouse

What is a computer virus? How they spread and 5 signs you've been infected

What is a computer virus? How they spread and 5 signs you've been infected

A computer virus is a form of malicious software that piggybacks onto legitimate application code in order to spread and reproduce itself.

What is a service mesh? Service mesh explained

What is a service mesh? Service mesh explained

A service mesh brings security, resiliency, and visibility to service communications, so developers don’t have to

What is serverless? Serverless computing explained

What is serverless? Serverless computing explained

Simple functions in isolation make development easier, while event-driven execution makes operations cheaper

What is a Trojan horse? How this tricky malware works

What is a Trojan horse? How this tricky malware works

A Trojan horse is a type of malware that can wreak havoc on computer networks — but only with your unwitting help.

What is PKI? And how it secures just about everything online

What is PKI? And how it secures just about everything online

Public key infrastructure (PKI) is a catch-all term for everything used to establish and manage public key encryption, one of the most common forms of internet encryption. It is baked into every web browser in use today to secure...

What is malware? How to prevent, detect and recover from it

What is malware? How to prevent, detect and recover from it

Malware is a blanket term for viruses, worms, trojans, and other harmful computer programs hackers use to wreak destruction and gain access to sensitive information. Learn what malware does and how you can remove it—or prevent it.

What is OPSEC? A process for protecting critical information

What is OPSEC? A process for protecting critical information

Operations security (OPSEC) is a process by which organizations assess and protect public data about themselves that could, if properly analyzed and grouped with other data by a clever adversary, reveal a bigger picture that ought to...

The 6 biggest ransomware attacks of the last 5 years

The 6 biggest ransomware attacks of the last 5 years

The biggest ransomware attacks illustrate how this particularly nasty genre of attack software has grown from a curiosity and an annoyance to a major crisis.

What is a honeypot? A trap for catching hackers in the act

What is a honeypot? A trap for catching hackers in the act

A honeypot is a system designed to lure hackers into revealing their origins and techniques, and they're used by security researchers and corporate IT alike.

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