Nice one

Signs your PC or Phone has been hacked

Subnetting

Linux file system

Which of the following is a public IP address? A. 10.255.255.254 B. 192.168.50.50 C. 172.15.1.1 D. 172.16.0.1

Explanation: 172.20.15.10 is a private address because it falls within the Class B range (172.16.0.0 to 172.31.255.255) reserved for internal networks by IANA.  ❌ 8.8.8.8 is a public address used for Google Public DNS. ❌ 192.0.2.1 is from a special range reserved solely for documentation and examples. ❌ 150.10.5.5 is a public address, as it sits outside all designated private blocks.  A Private IP address is like an internal extension in an office building. Just as extension "101" only works inside that specific office and cannot be dialed directly from a random home, a private IP allows your laptop and printer to talk to each other without being visible to the global internet. These addresses are free for anyone to use locally, which helps save the limited supply of unique public IP addresses required for the global web.  A Public IP address is like the building’s unique street address. It is one-of-a-kind worldwide and is what your router uses to communicate with websites. When you visit a site, your router uses Network Address Translation (NAT) to swap your private address for its public one to fetch the data, ensuring the right information returns to your specific device B. 172.20.15.10 ✅

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OSINT with Kali

Phone OSINT with Parrot 🦜

This mind-boggling breach actually happened at a major North American casino where hackers stole a massive database of high-roller clients. The vulnerability wasn't a corporate server or an employee laptop; it was a smart, internet-connected thermometer inside a luxury aquarium located in the lobby. Because the casino's technology team attached this smart thermometer directly to the main corporate network without isolating it behind a firewall, it became an unsecured open door. Hackers found the fish tank online, exploited its weak factory security settings to gain a foothold, and then used that connection to move laterally across the network until they located and extracted the sensitive customer files. The weakness that allowed this to happen is called the Internet of Things (IoT) vulnerability, and you almost certainly have it in your home right now. Devices like smart lightbulbs, robot vacuums, Wi-Fi security cameras, and connected refrigerators are built for convenience and low cost, meaning manufacturers rarely include robust security software or firewalls. If you connect these smart gadgets to your home Wi-Fi network without setting up a separate, isolated guest network, a hacker who compromises a cheap smart bulb can easily hop over to your personal laptop or smartphone to steal your bank passwords, tax documents, and personal identity.

More context

This occurs because app store counters track cumulative installations rather than active human beings. Most internet users own multiple connected gadgets simultaneously. A single individual frequently downloads the application onto a personal smartphone, a corporate phone, a tablet, and a smart television. Furthermore, hardware turnover dramatically inflates these metrics. Consumers replace their mobile devices every few years. Every time a user activates a new phone, performs a factory reset, or configures an alternative account, the platform logs a brand-new installation. Because one person triggers dozens of downloads over a decade, the metric easily outpaces the global population.

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B

Which of the following IP addresses is a private IP address? A. 8.8.8.8 B. 172.20.15.10 C. 192.0.2.1 D. 150.10.5.5