top of page
Tech Tutorials | App Reviews & Android Fixes | Fintech Shield Blog
Welcome to the Fintech Shield Blog | Your go-to hub for insightful Tech Tutorials, Unbiased App Reviews, Android Solutions, Windows Solutions and Digital innovation tips. Whether you're a curious user or a seasoned tech pro, we’ve got something valuable for you. Stay ahead in the digital era with our expert-driven guides and updates.
Search


What Are the Three Goals of Cybersecurity? [CIA Triad Explained]
The three goals of cybersecurity - Confidentiality, Integrity, and Availability form the backbone of digital protection. This blog explains the CIA Triad, why it matters, and how it applies to real-world scenarios in 2025.
Kalyan Bhattacharjee
Sep 223 min read


Android 16 Fights Stingray Surveillance with New Network Notification Feature
Android 16 is stepping up mobile security with its new “Network Notifications” feature, designed to alert users when their device connects to fake cell towers—also known as Stingrays. This update offers a major privacy boost by detecting unencrypted or suspicious networks, helping users stay one step ahead of surveillance threats.
Kalyan Bhattacharjee
Jul 113 min read


Secure Internal Communication: Why It’s Critical for Cybersecurity & DevOps
In an age where data breaches and cyber threats are constantly evolving, secure internal communication is no longer optional it’s essential. Whether you're managing a growing app, a cloud-based business, or an enterprise network, protecting the flow of data between services, servers, and internal APIs is critical.
Kalyan Bhattacharjee
Jul 94 min read


Top Cybersecurity Companies in India (2025 List & Services)
Cyberattacks in India are rising — and these cybersecurity companies are stepping up. From antivirus to AI threat detection, here’s who’s leading the charge in 2025.
Kalyan Bhattacharjee
Jul 54 min read


How to Use a Firewall on a Rooted Android Phone (Full Setup 2025)
Take control of your Android device with root-level firewalls! This guide shows you how to use AFWall+, NetGuard, and more to block unwanted app connections and enhance your phone’s privacy and performance.
Kalyan Bhattacharjee
Jun 274 min read


Data Leak: 16 Billion Usernames and Passwords Compromised (2025)
In one of the largest data exposures in history, over 16 billion usernames and passwords have surfaced on the dark web, raising serious concerns about global cybersecurity. Compiled from multiple breaches and info-stealer malware attacks, this massive dataset includes login credentials from platforms like Google, Facebook, Apple, and more. If you've reused passwords or stored them in your browser, your accounts could be at risk.
Kalyan Bhattacharjee
Jun 205 min read


Windows Defender Security Center: Virus Protection, Firewall & More
Windows Defender Security Center, now known as Windows Security, is Microsoft’s all-in-one solution for malware protection, firewall control, and device performance. This blog walks you through its features, real-time protection tools, and why it’s enough for most users in 2025.
Kalyan Bhattacharjee
Jun 204 min read


Best 5 Antivirus Apps for Android (2025 Malware-Tested)
Worried about Android malware in 2025? We tested the best antivirus apps that really detect threats. Explore top picks like Bitdefender, Norton & more.
Kalyan Bhattacharjee
Jun 153 min read


How to Use Google Authenticator App | Step-by-Step Setup & Tips
Discover how the Google Authenticator app protects your accounts with 2FA. This guide shows you how to set it up, use it daily, and recover access if needed.
Kalyan Bhattacharjee
Jun 103 min read


How to Tell If Your Phone Is Being Tracked (And Stop It)
Is someone secretly tracking your phone? Learn how to spot the signs - like sudden battery drain or weird app activity—and take back control with simple, effective steps to protect your privacy and stop unwanted tracking.
Kalyan Bhattacharjee
May 233 min read


How Does Antivirus Software Work? A Beginner-Friendly Guide
Ever wondered how antivirus software keeps your computer safe? This beginner-friendly guide explains how antivirus detects, blocks, and removes threats in real-time.
Kalyan Bhattacharjee
Apr 283 min read


Securing Digital Identities with Blockchain Technology
Blockchain secures digital identities by ensuring privacy, decentralization, and tamper-proof authentication in today's digital world.
Kalyan Bhattacharjee
Apr 193 min read


What is Biometric Authentication | How It Works?
Biometric authentication uses unique physical or behavioral traits - like fingerprints, facial recognition, or iris scans—to verify identity.
Kalyan Bhattacharjee
Apr 183 min read


Network Security Key | What It Is and Why It Matters (2025 Guide)
A Network Security Key is more than just a Wi-Fi password. It's your first line of defense against unauthorized access to your private network. In this blog, we explore what a network security key is, the different types (WEP, WPA, WPA2/WPA3), and why understanding it is crucial for protecting your digital footprint. Whether you're a home user or managing a business network, knowing how this key works can help you secure your data and prevent cyber threats.
Kalyan Bhattacharjee
Aug 26, 20245 min read


Network Security - A Deep Dive into Firewall Authentication
Explore the critical role of firewall authentication in network security, and learn how step-by-step implementation safeguards systems, controls access, and protects sensitive data from cyber threats.
Kalyan Bhattacharjee
Mar 22, 20243 min read


CERT-IN: Origin, Purpose, and Role in India's Cybersecurity Landscape
The Indian Computer Emergency Response Team (CERT-IN) plays a pivotal role in safeguarding the nation's digital infrastructure. Established under the Ministry of Electronics and Information Technology, CERT-IN is the nodal agency for responding to cybersecurity threats and incidents in India. This blog explores the origin, purpose, and vital functions of CERT-IN in strengthening India’s cyber defense and promoting secure digital practices nationwide.
Kalyan Bhattacharjee
Feb 13, 20243 min read


What Is a RAT Tool? Risks, Examples, and How to Prevent Attacks
Remote Access Trojans (RATs) are powerful yet dangerous tools that can give cybercriminals full control over your device without your knowledge. In this blog, we break down what RAT tools are, how they work, the risks they pose to your privacy and data, and most importantly - how you can prevent falling victim to them.
Kalyan Bhattacharjee
Sep 6, 20234 min read


MITM Attacks Explained: Securing Your Digital World
Man-in-the-Middle (MITM) attacks are a stealthy but powerful cyber threat where attackers secretly intercept or alter communication between two parties. Whether you're browsing over public Wi-Fi or logging into secure websites, MITM attacks can expose your personal data, login credentials, and sensitive transactions. In this blog, we break down how these attacks work, the signs to watch for, and the essential steps you can take to protect your digital life.
Kalyan Bhattacharjee
Jul 18, 20234 min read


Encryption and Decryption Guide: Safeguarding Your Digital World
In today’s connected world, our personal and professional data travels across countless digital channels. From online banking to private chats, encryption and decryption act as the invisible shields that keep sensitive information safe from prying eyes. This blog explores how these security mechanisms work, why they matter in everyday life, and how you can use them to protect your digital world.
Kalyan Bhattacharjee
Jul 9, 20234 min read


What Is Phishing? Protecting Yourself from Phishing Attacks
Phishing Attacks Introduction In today's interconnected world, where online activities have become an integral part of our daily lives,...
Kalyan Bhattacharjee
Jun 30, 20233 min read
Enjoying the content? Don’t forget to bookmark your favorites and share them with your network. We're here to empower your digital journey - One blog at a time.

CONTACT
Have a question, collaboration idea, or just want to say hello? I’d love to hear from you! Whether it’s brand inquiries, freelance projects, or tech-related queries - feel free to reach out anytime.
bottom of page