Cybersecurity

You can ask AI for the answer to every Security+ practice question. You will pass the practice test and fail the exam. I am studying for Security+ right now. I use AI every day for it. The difference between using it well and using it badly comes down to one question: are you asking it to give you answers, or asking it to help you build understanding? Asking AI for the answer produces a correct answer. It does not produce retention. The moment you close the chat, the answer is gone. You have outsourced the cognitive work without doing any of it. ...

I got my Novell NetWare certification in the 1990s. Between jobs after that, I ran network cables and configured routers as freelance work. When I moved into IT full time, I was configuring the same routers. When I eventually moved into cybersecurity, I did not struggle with the concepts the way I watched others struggle. Not because I was smarter. Because I already knew what a subnet was, how routing worked, and what happened to a packet between point A and point B. ...

The AI tools showing up in security work right now run in the cloud, behind APIs, on someone else’s hardware. You send data out, you get a response back, and you have no visibility into what happens in between. For learning, that model has a ceiling. You cannot break what you cannot see. A Raspberry Pi 5 with a Hailo AI accelerator changes that. Under $200 in hardware. Runs local inference. No data leaves the device. You can build network traffic anomaly detection, behavioral analysis pipelines, and IoT monitoring on the same board, in your own environment, with full control over every layer of the stack. ...

The optimistic version of artificial general intelligence is not hard to imagine. A world where disease gets solved faster, energy is abundant, and human labor shifts toward things humans actually want to do. Gene Roddenberry built a franchise on that premise. The technology trajectory Altman describes follows a logical endpoint: compounding capability with no ceiling in sight. The destination is fine. The transition is where the damage happens. The Operator in the Room Altman’s role at OpenAI is operational: he decides when to ship. In 2022, OpenAI’s leadership was debating whether to release ChatGPT at all, arguing for a more powerful version. Altman pushed to go. ChatGPT launched in November 2022 and reached 800 million weekly users. The timing was his call. ...

Nmap sends packets and listens for what comes back. What comes back tells you more about a network than most administrators know about their own infrastructure. Gordon Lyon released Nmap in 1997 in a Phrack magazine article. It has been in active development since then and has appeared in over a dozen films, including The Matrix Reloaded, Die Hard 4.0, and Bourne Ultimatum, because filmmakers use it when they need a terminal to look like actual hacking. It is one of the most widely used security tools in existence, and most people who run it do not fully understand what it is doing. ...

DarkSide did not use a sophisticated zero-day to shut down 45 percent of the East Coast fuel supply. They used a password found in a leaked credential database and an account that had no multi-factor authentication. On May 7, 2021, Colonial Pipeline shut down 5,550 miles of pipeline after discovering a ransomware infection. That pipeline moves 100 million gallons of fuel per day and supplies gasoline, diesel, and jet fuel from Texas to New York. It stayed offline for six days. ...

The Security+ exam will ask you to match a port number to a protocol. The job will ask you to look at a SIEM alert at 2 AM and decide whether it is worth waking someone up. Those are different skills. The certification is still worth getting. But going in without understanding the gap leaves you underprepared for the work even after you pass. What the Exam Tests The current Security+ (SY0-701) has up to 90 questions across 90 minutes. CompTIA divides the content into five domains: General Security Concepts, Threats, Vulnerabilities and Mitigations, Security Architecture, Security Operations, and Security Program Management and Oversight. ...

Brute force guesses passwords. Credential stuffing already has them. That distinction matters because the defenses are different, and most people conflate the two. If you lock an account after five failed attempts, you stop a brute force attack. You do almost nothing to stop credential stuffing. What Credential Stuffing Actually Is When a company gets breached and loses its user database, those credentials get sold, traded, and published. Have I Been Pwned tracks over 14 billion compromised accounts as of 2026. That number grows every month. ...