Easy & Step-By-Step Ways of Finding Bugs in Software

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Bug Finding: How to Find Maximum Bugs, Types, and Tools

At the end of this article, you’ll be able to find the best way to find Maximum bugs in your software, the type of bugs, and the tools which can make your cumbersome bug-finding task with a snap of a finger.

Some Shocking Facts About Software Bugs

  • The recent iPhone bug where users could not type the letter “I”.
  • Some are costly bugs and can cost a fortune to fix one such bug: the Y2K bug.
  • One software bug literally led to the death of people due to the patriot missile bug; 28 people died in 1991.
  • Any buggy code reflects poorly on them and their team and will eventually affect the company’s bottom line.
  • Also, buggy code is inconvenient to work with and reduces productivity. The more quality code you can write, the more effective you will be. Finally, bugs are expensive.
  • Various software bugs are estimated to have cost the global economy $1.7 trillion in 2017.

Best Way to Find the Maximum Number of Bugs in Software

#01 Quick Attacks on Real Browsers and Devices

It’s even hard to imagine a tester doing a quality check system without any requirements. In the absence of formal requirements, it’s hard to create test scenarios. In such a situation the best technique is to attack the system, causing panic in the software by putting wrong values in the software all this will eventually help to find the problem in the software.

#02 Pay Attention to the Test Environment

Testers typically have time to prepare scenarios, establish timelines, and establish procedures. This period should also include an assessment of the test infrastructure, also known as the test environment. This is due to flaws in the testing environment, causing unnecessary and entirely avoidable delays in the generation of test results.

#03 Do Your Own Research

Before beginning testing, thoroughly understand the entire application or module.

#04 Pareto Principle

According to the Pareto principle, 20% of efforts generate 80% of results, and the rest, 80%, bring a lower 20%. This principle was introduced by Italian economist Vilfredo Pareto hence the name Pareto principle.

#05 Set Goals for Software Quality

The tester should be aware of the standard of the software that needs to be maintained, which gives the tester an idea of what sort of bugs to look for.

11 Most Common Types of Bugs in Software You Should Know

This part is one of the most crucial ones as you must know as a developer or software tester; if you know precisely what different types of bugs software can encounter, you can solve the problem much faster.

#01 Functional Error

Regarding functionality, each program should work correctly. However, as you can understand from the name itself, functionality errors occur when software does not perform the allocated function.

#02 Syntax Errors

These types of software bugs occur in a program’s source code.

#03 Logical Bugs

Logic errors are one type of coding error that can cause your software to produce incorrect output, crash, or even fail. Logic defects, such as an infinite loop, are errors in the flow of your software.

  • Incorrectly assigning a value to a variable
  • Dividing two numbers instead of adding them together produces unexpected results.

#04 Performance Errors

Performance defects are another type of software bug related to the speed of the software, an issuer with the stability of the software, or response time or resource consumption. Usually, this type of bug is discovered during the software development process.

#05 Calculation Error

A calculation error occurs whenever software returns an incorrect value, whether it is one that the end-user sees or one that is passed to another program. This could happen for a variety of reasons, including:

  • To compute the value, the software employs the incorrect algorithm.
  • A data type mismatch exists in the calculation.
  • For example, the developers incorrectly coded the calculation or value hand-off to another program.

#06 Security Error

Security flaws are among the most severe types of flaws that a software developer or software engineering team can encounter. For example, security flaws differ from other software bugs in exposing your project to risk.

#07 Unit-Level Error

The unit-level software bug is another common type of bug. After your program has been coded, the developer himself typically performs unit testing, which involves testing a smaller section of the code as a whole to ensure that it functions properly.

#08 System-Level Integration Bugs

These errors occur when there is an error in the interaction of two different subsystems. Because multiple software systems are involved, often written by different developers, these software bugs are generally more challenging to fix.

#09 Usability Error

A usability defect is the type of error that prevents a user from fully utilizing the software. This bug makes it difficult or inconvenient to use a piece of software.

#10 Control Flow Error

The software control flow describes what will happen next and under what circumstances.

#11 Compatibility Errors

Compatibility error occurs when the software or an application is incompatible with hardware or an operating system. Finding compatibility errors is not common practice because they may not be detected during initial testing.

Some Examples of Bugs in Software

Software Defects By Severity

  • Critical defects typically obstruct an entire system’s or module’s functionality, and testing cannot continue until such a defect is fixed. A critical flaw is when an application returns a server error message after a login attempt.
  • High-severity defects affect an application’s key functionality, and the app behaves in a way that differs significantly from the one specified in the requirements; for example, an email service provider does not allow adding more than one email address to the recipient field.
  • When a minor function does not behave as specified in the requirements, a medium-severity defect is identified. For example, a broken link in an application’s Terms and Conditions section is an example of such a flaw.
  • Low-severity defects are mostly related to an application’s user interface and can include things like a slightly different size or color of a button.

Software Defects By Priority

  • Urgent defects must be corrected within 24 hours of being reported. This category includes defects with a critical severity status. However, low-severity defects can also be classified as high-priority. For example, a typo in a company’s name on an application’s home page has no technical impact on software but has a significant business impact, hence urgent defects.
  • High-priority defects are errors that must be fixed in a future release to meet the exit criteria. For example, a high-priority defect would be an application failing to navigate a user from the login page to the home page despite the user entering valid login data.
  • Medium-priority defects are errors that may be fixed in a subsequent release or after an upcoming release. A medium-priority defect is an application that returns the expected result but formats incorrectly in a specific browser.
  • Low-priority defects are errors that do not need to be fixed in order to meet the exit criteria but must be fixed before an application is released to the public. This category typically includes typos, alignment, element size, and other cosmetic UI issues.

What is the First Thing to do When You Find A Bug In The Software?

#01 Begin Testing Additional Related Scenarios

Bugs are always part of a colony. When you identify a bug in one area, it’s relatively common to discover other related issues. So, once something is discovered, keep looking because you never know what else you’ll discover.

#02 Note the Current State of the Application

This can also help you determine whether an external issue caused the bug. Not only do you want to know how to reproduce the problem, but also the current state of the environment in which you are testing.

#03 Check to See if it has Already Been Reported

Some bugs have already been identified and reported. However, it’s pointless to redo work that has already been done.

#04 Report It As Soon As Possible

If you discover that the bug has not been reported (see step above), you must report the issue as soon as possible. Bugs enjoy being identified and recognized.

#05 Enjoy The Moment

I’ve seen testers become enraged when they discover bugs. They’re upset because the system is broken.

Steps You Should Follow to Find Software Bugs

The best way to test software for bugs is to do the following:

  • Before beginning testing, thoroughly understand the entire application or module.
  • Before beginning testing, create specific test cases. I mean emphasizing the functional test cases that include the application’s significant risk.
  • Prepare enough Test Data before running tests; this dataset should include test case conditions as well as database records if you are testing a database-related application.
  • Run the tests again with a different Test Environment.
  • Attempt to determine the expected result and then compare your results to those patterns.
  • Once you believe you have completed the majority of the test conditions and are feeling somewhat tired, perform some Monkey Testing.
  • Analyze the current set of tests using your previous Test Data pattern.
  • Execute some Standard Test Cases for which you discovered bugs in another application. For example, if you’re testing an input text box, try inserting some HTML tags as inputs and seeing what happens on the display page.
  • The final and best trick is to work hard to find the bug as if you’re only testing to break the application.

Bug Finding Tools

Bug identifying tools are probably the simplest way to find software bugs. Such tools make it easier to track, report, and assign bugs in software development, making testing easier. There are several tools available, such as SpiraTeam, Userback, and ClickUp, that can accomplish this task and greatly simplify software testing.

Role of Real Devices in Bug Finding

To launch a highly successful, efficient, user-friendly software in the industry, it is essential your software must be thoroughly tested in real user conditions.


With the advancement in technology and growing competition, software development has become more and more difficult. You must provide regular updates, add new features, and much more.



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