Hello, Devs!
Protect your system from the very first character!
In order to reinforce our commitment to the security and integrity of internally developed systems, we emphasize the importance of data input validation as an essential step in secure software development.
Data that is not properly validated is one of the main causes of vulnerabilities such as SQL Injection, Cross-site Scripting (XSS) , and authentication failures. Therefore, we emphasize that all data coming from the user, external systems, or APIs must be validated, sanitized, and handled appropriately.
Other examples of attacks include Command Injection , which allows an attacker to execute commands directly on the operating system by exploiting flaws in input validation. There’s also Buffer Overflow , which occurs when unverified data exceeds memory limits, enabling the execution of arbitrary code and compromising system functionality. And finally, CSRF, which, when combined with inadequate validation, can allow actions to be executed on behalf of the user without their consent, compromising the integrity and confidentiality of the operations performed.
Failure to validate input data is at the root of some of the biggest cybersecurity disasters in modern times. Statistics indicate that attacks on web applications are the main vector for intrusions (Source: Verizon DBIR), and the average cost of a data breach in Brazil exceeds R$6 million (Source: IBM).
Company in the credit and data analysis sector (vulnerabilities: Command Injection ):
The organization failed to properly validate an entry on its web portal, which allowed hackers to execute commands directly on the server.
- Impact: Data breach affecting 147 million people, with estimated losses of US$1.4 billion.
Giant payment processor (vulnerability: SQL Injection ):
A simple SQL injection on their website enabled the installation of malware on the company’s systems.
- Impact: Theft of data from 130 million credit cards and costs exceeding US$200 million.
International airline (fault: Cross-Site Scripting – XSS ):
A malicious script was injected into the payment page, capturing data in real time during transactions.
- Impact: Theft of financial information from 500,000 customers and a fine of approximately £20 million.
These examples show that data validation is an essential defense against small coding errors that can escalate into financial and reputational catastrophes.
Also Read : The Foundation of DevSecOps: Cultivating a culture of security first.
