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APPLICATION SECURITY
Application security, from the browser to the API
Two pillars carry application security. The first is the web application itself, the software your people and customers open in a browser. The second is everything behind it, the APIs and mobile apps that move data between systems.
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Web Application Security
Secure your applications. Protect every digital interaction.
Web applications are increasingly at the center of business operations—from customer portals and financial services to e-commerce and internal platforms. But every application exposed to the internet can become a target for attackers.
Vulnerabilities in code, authentication, access controls, APIs, and configurations can expose sensitive data and critical business functions. Netrust helps organizations identify application weaknesses, strengthen security controls, and protect web applications throughout their lifecycle.
FIVE KEY ASPECTS
What makes a web application secure?
Scroll through five critical areas of web application security, from access control to continuous protection.
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Secure Access
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Authentication & Authorization
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Application Protection
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Data & API Security
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Continuous Monitoring
01
Secure Access
Control who can access your applications and what they can do.
Protect application entry points with strong access controls that help prevent unauthorized users from reaching sensitive systems and functions.
02
Authentication & Authorization
Verify every user. Enforce every permission.
Strengthen authentication and authorization to reduce the risk of compromised accounts, privilege abuse, and unauthorized access to sensitive resources.
03
Application Protection
Find vulnerabilities before attackers exploit them.
Identify weaknesses in application code, configurations, and components through security testing and vulnerability assessment, helping organizations address risks before they become incidents.
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Data & API Security
Protect the data moving through your applications.
Secure sensitive information and application interfaces against unauthorized access, manipulation, and exposure across APIs and connected services.
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Continuous Monitoring
Security doesn't stop when your application goes live.
Maintain visibility into application activity and potential threats to help detect suspicious behavior, respond to attacks, and continuously strengthen your security posture.
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HOW DO YOU SECURE WEB APPLICATIONS?
Four steps, from vulnerability to protection
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Identify Vulnerabilities
Discover weaknesses in application code, configurations, components, and security controls that attackers could exploit.
02
Assess & Test
Test applications for exploitable vulnerabilities and validate whether existing security controls can withstand real-world attack techniques.
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Protect & Remediate
Strengthen application defenses and address identified vulnerabilities to reduce the risk of unauthorized access, data exposure, and exploitation.
04
Monitor & Improve
Continuously monitor application security and respond to emerging threats as applications, users, and attack techniques evolve.
COMMON SECURITY SCENARIOS
Where web application security matters
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Customer-Facing Applications
Protect portals and digital services that handle customer accounts, transactions, and sensitive information.
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Financial & Payment Platforms
Secure applications that process financial data, payments, transfers, and other high-value transactions.
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E-Commerce Platforms
Protect customer information, payment workflows, accounts, and critical business functions from application-layer attacks.
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Business-Critical Applications
Secure internal and external applications that support essential business operations and access sensitive data.
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API-Connected Applications
Protect APIs and connected services that exchange data between applications, systems, and third-party platforms.
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USE CASE
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Customer-facing applications
WHAT IT COVERS
CUSTOMER PORTALS
DIGITAL SERVICES
USER ACCOUNTS
USE CASE
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Financial & payment platforms
WHAT IT COVERS
PAYMENTS
TRANSACTIONS
FINANCIAL DATA
USE CASE
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E-commerce platforms
WHAT IT COVERS
CUSTOMER DATA
CHECKOUT
ACCOUNTS
USE CASE
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Business-critical applications
WHAT IT COVERS
BUSINESS OPERATIONS
SENSITIVE DATA
ACCESS
USE CASE
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API-connected applications
WHAT IT COVERS
API
DATA EXCHANGE
INTEGRATIONS
FIVE BENEFITS
What secure web applications give you
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Reduced Attack Surface
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Identify and address vulnerabilities before they can be exploited, reducing opportunities for attackers to compromise your applications.
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Protected Data
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Safeguard sensitive customer, financial, and business information from unauthorized access, exposure, and manipulation.
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Stronger Access Control
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Strengthen authentication and authorization to help ensure users access only the applications, data, and functions they are permitted to use.
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Improved Risk & Compliance Posture
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Support security requirements and reduce application-related risks through structured security testing, controls, and remediation.
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Greater Business Resilience
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Reduce the potential impact of application-based attacks and help keep critical digital services secure and available.
CURRENT TRENDS IN APPLICATION SECURITY
Seven shifts shaping application security
As apps evolve, security must evolve with them–from development and APIs to cloud, identity, and runtime protection.
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Shift-Left Security
Security moves earlier in the development lifecycle, helping teams identify and address vulnerabilities before applications reach production.
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API Security
As applications increasingly rely on APIs, protecting endpoints, authentication, data exchange, and access controls becomes essential.
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Cloud-Native Application Security
Modern applications span cloud infrastructure, containers, and microservices, creating new attack surfaces that require security across the stack.
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Zero Trust Application Access
Application access is increasingly based on continuous verification of users, devices, identities, and permissions rather than implicit trust.
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Continuous Security Testing
Automated vulnerability scanning and security testing help organizations identify weaknesses continuously as applications change and evolve.
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Runtime Application Protection
Security extends beyond development into production, helping detect and respond to attacks and suspicious application behavior in real time.
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AI-Driven Application Security
AI is changing both applications and the threat landscape, increasing the need for stronger controls around data, access, application behavior, and emerging attack techniques.
WHY THESE SHIFTS MATTER
Faster, safer, and easier to maintain
They help web applications become faster, more secure, easier to maintain, and more user-friendly, allowing businesses to deliver better experiences without high costs or complex infrastructure.
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API Protection & Mobile App Security
API Protection and Mobile App Security work together to protect applications and user data from cyber threats. APIs connect different systems and services, while mobile apps are used by end users, so both must be secured to prevent data breaches and attacks.
SIX KEY ASPECTS
What has to be covered
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Authentication and Authorization
Ensures only verified users and apps can access systems and data.
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Data Encryption
Protects sensitive data while being transmitted or stored.
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Threat Detection
Identifies suspicious activities like unusual requests or unauthorized access.
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Secure Coding Practices
Prevents vulnerabilities in APIs and mobile applications.
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Monitoring and Logging
Tracks activity to detect and investigate potential threats.
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App Integrity Protection
Detects tampering, reverse engineering, or unauthorized modifications.
HOW IT WORKS
Five controls, always running
Every request is checked, encrypted, and watched, so suspicious activity is caught before it reaches your data.
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Access Control
Users and applications are verified before accessing APIs or mobile apps.
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Secure Communication
Data is encrypted to prevent interception.
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Request Validation
API requests and app inputs are checked for malicious content.
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Continuous Monitoring
Systems track usage and detect abnormal behavior.
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Threat Response
Suspicious activity is blocked or flagged for investigation.
REQUEST VERIFIED
Every call is checked before it ever reaches your data.
Access control, encryption, validation, and monitoring in one flow.
NINE BEST PRACTICES
Strong authentication, least privilege, and testing that never stops.
IMPLEMENTATION BEST PRACTICES
How to secure APIs and mobile apps
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Use Strong Authentication
Implement secure methods like OAuth, tokens, and multi-factor authentication to verify users and apps.
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Apply Least-Privilege Access
Only allow users and apps to access the data and functions they truly need.
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Encrypt Data Everywhere
Use HTTPS and TLS to protect data in transit and encrypt sensitive data stored on devices or servers.
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Validate All Inputs
Check and sanitize all API requests and user inputs to prevent malicious data from being processed.
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Implement Rate Limiting
Limit the number of API requests to prevent abuse and denial-of-service attacks.
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Secure API Keys
Avoid hardcoding keys in mobile apps. Store them securely and rotate them regularly.
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Use Secure Coding Practices
Regularly test and review code to prevent vulnerabilities.
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Monitor and Log Activity
Track API usage and app behavior to quickly detect suspicious actions.
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Regular Security Testing
Perform penetration testing and vulnerability scans to identify weaknesses.
COMMON THREATS
What attackers go after
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Broken Authentication
Weak login systems that attackers can bypass to gain unauthorized access.
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Data Exposure
Sensitive data being sent or stored without proper encryption.
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API Abuse and Overuse
Attackers sending too many requests to overload or exploit the API.
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Insecure API Endpoints
Poorly protected endpoints that allow unauthorized access.
COMMON USE CASES
Where this protection is applied
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Mobile banking and finance
Securing mobile banking and financial applications end to end.
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Web and mobile APIs
Protecting APIs used on web and mobile platforms.
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Data leak prevention
Preventing data leaks and unauthorized access.
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App to backend traffic
Ensuring safe communication between apps and backend systems.
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Credential protection
Protecting user credentials and personal information.
WHY IT MATTERS
The connection is as exposed as the app
APIs and mobile apps carry credentials, payments, and personal information between systems every second. Securing both keeps that traffic private, blocks tampering and abuse, and stops a single weak endpoint from turning into a data breach.
Get in touch with us.
Whether you are exploring cybersecurity solutions, looking for long-term security support, or interested in working with our team, we'd be happy to connect.
