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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.
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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


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 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 284 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


IT Solutions | Driving Business Success in the Digital Era
Empower your business with cutting-edge IT solutions! Cloud computing to cybersecurity, discover how tech drives success in the digital age.
Kalyan Bhattacharjee
Jan 203 min read


Cybersecurity Threat Detection: Key Elements of Network Security Monitoring
Ensure robust cybersecurity with effective Network Security Monitoring. Learn key factors to detect threats, and prevent breaches.
Kalyan Bhattacharjee
Jan 83 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


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


The Dark Side of AI: Inside the World of Deepfakes
Deepfakes are redefining the boundaries of digital media - blurring the line between real and fake with astonishing accuracy. Powered by advanced AI, these manipulated videos and images can imitate real people with unsettling realism, raising concerns about misinformation, privacy, and security. In this blog, we unravel the technology behind deepfakes, explore their implications, and discuss how to spot and safeguard against this rising form of digital deception.
Kalyan Bhattacharjee
Jun 28, 20234 min read


Hardware Firewalls: Enterprise-Grade Security for Every Network
In an age of increasing cyber threats, relying solely on software protection isn't enough. Hardware-based firewalls offer a powerful first line of defense by filtering incoming and outgoing traffic at the network's entry point. Unlike traditional software firewalls, these dedicated security devices provide enhanced performance, deeper packet inspection, and are less vulnerable to tampering.
Kalyan Bhattacharjee
Jun 12, 20234 min read


Differences Between WPA and WPA2 for Enhanced Wireless Security
WPA and WPA2 are wireless security protocols designed to protect your Wi-Fi network - but they’re not the same. This blog breaks down the key differences in encryption, performance, and overall security to help you understand which one keeps your connection safer in today’s digital landscape.
Kalyan Bhattacharjee
Jun 5, 20234 min read


Firewalls Explained | The First Line Of Strong Cyber Defense
Firewalls serve as the digital gatekeepers of your network, monitoring and controlling incoming and outgoing traffic based on pre-defined security rules. Whether hardware- or software-based, they create a protective barrier between trusted internal networks and untrusted external sources like the internet. This blog breaks down how firewalls work, their different types, and why they remain the first line of defense against modern cyber threats in 2025.
Kalyan Bhattacharjee
May 27, 20233 min read


Data Execution Prevention (DEP): Enhancing Cybersecurity
Data Execution Prevention (DEP) is a critical security feature that helps protect your system from malicious attacks by preventing unauthorized code from running in memory. In this blog, we explore how DEP works, why it’s important for cybersecurity, and how users can ensure it's enabled to strengthen their device's defense against threats.
Kalyan Bhattacharjee
May 16, 20233 min read


Exploit Attack Protection: Going Beyond Firewalls for System Security
Firewalls are just the first line of defense in today’s complex digital landscape. As cyber threats evolve, so must our approach to securing systems. This blog explores advanced exploit defense strategies beyond traditional firewalls—like behavior-based threat detection, zero trust architecture, patch management, and more—to build a resilient cybersecurity posture and protect against sophisticated attacks.
Kalyan Bhattacharjee
Apr 15, 20234 min read
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