Penetration testing is a controlled simulation of a cyberattack on your organization’s systems. A security expert attempts to break into the systems just like a real hacker would – but in a legal, documented way and with one clear goal: to identify vulnerabilities before a real attacker exploits them.
What is tested in a penetration test?
A comprehensive penetration test examines all possible entry points into the organization.
The test includes external infrastructure such as servers, websites, and cloud services exposed to the internet. In addition, the internal network is tested – workstations, internal servers, and management systems.
Web and mobile applications are tested for vulnerabilities such as SQL Injection, XSS, and authentication weaknesses. The human factor is also tested via social engineering and phishing simulations.
The result is a detailed report that presents the vulnerabilities found, the risk level of each one, and practical recommendations for remediation. You can also review the range of security services we offer.
Types of penetration tests
There are three main approaches to penetration testing, and the difference between them is how much information the tester receives in advance.
| Test Type | Information Given to Tester | Suitable For | Advantages |
|---|---|---|---|
| Black Box | No prior information | Simulating an external attacker | Realistic simulation of an attack |
| White Box | Full access – code, diagrams, docs | Deep and thorough assessment | Maximum coverage, time-efficient |
| Gray Box | Partial information – e.g. regular user account | Attacker with initial access | Balance between realism and depth |
Why does every business need a penetration test?
The first reason is simple – you don’t know what you don’t know.
Most organizations are convinced their systems are secure. A penetration test reveals reality. Very often, vulnerabilities are discovered that no one was aware of.
The second reason is cost. A real cyberattack costs businesses in Israel hundreds of thousands of shekels on average – and sometimes much more. The cost of a penetration test is a fraction of the potential damage.
The third reason is regulation and standards. Organizations working under standards such as ISO 27001, SOC 2, or PCI DSS are required to perform periodic penetration tests. Regulations such as privacy protection laws also require proof of adequate security.
The fourth reason is customer trust. Customers and vendors want to know their data is protected. A penetration test report shows that you take security seriously.
Comparison: Penetration test vs. vulnerability scan
| Criterion | Penetration Test | Vulnerability Scan |
|---|---|---|
| What it is | Manual attack simulation by an expert | Automated software-based scan |
| Depth | In-depth testing with actual exploitation | Surface-level identification without exploitation |
| Duration | Days to weeks | Hours |
| Cost | Higher | Lower |
| Results | Detailed report with proof and recommendations | List of potential vulnerabilities |
| False positives | Almost none | Many |
| When to use | Annually, before launches | Ongoing, e.g. monthly |
For more information on types of security tests, you can read the articles in the blog.
When should you run a penetration test?
The right timing for a penetration test depends on several factors.
It is recommended to perform at least one penetration test per year as part of your security routine. In addition, there are situations that call for an immediate test.
Before launching a new product or application, you should ensure there are no critical vulnerabilities. After major infrastructure changes – such as migrating to the cloud or a large system upgrade – you need to verify everything is still secure. Before raising investment or entering a new market, a penetration test demonstrates seriousness and professionalism.
Organizations in sensitive sectors such as fintech, healthcare, or defense should consider more frequent testing.
Recommended frequency by organization type
| Organization Type | Recommended Frequency | Notes |
|---|---|---|
| Early-stage startup | Before each funding round, at least annually | Focus on the application |
| Small–medium business | Once a year | Emphasis on infrastructure and website |
| Fintech / Payments | Quarterly or as required by PCI DSS | Mandatory for compliance |
| Healthcare | Twice a year | Protecting medical data |
| Large organization / Enterprise | Quarterly + before any major change | Continuous testing |
What happens after the test?
A penetration test is not the end of the process – it’s the beginning. Once you receive the report, you need to act.
The first step is prioritization. Not all findings require immediate attention. Critical vulnerabilities that allow access to sensitive data are addressed first. Lower-risk issues can wait.
The second step is remediation. The IT team or developers fix the vulnerabilities according to the recommendations in the report.
The third step is re-testing. After remediation, it’s recommended to perform a focused follow-up test to verify that the vulnerabilities have indeed been closed.
Severity rating of findings
| Severity Level | Meaning | Recommended Fix Time | Example |
|---|---|---|---|
| Critical | Full access to systems or sensitive data | Immediate – within 24 hrs | SQL Injection exposing a database |
| High | Potential for significant damage | Within one week | Authentication flaw enabling account takeover |
| Medium | Limited risk or requires specific conditions | Within one month | Exposure of technical information about the system |
| Low | Minimal impact | Within a quarter | Non-optimal security configurations |
How much does a penetration test cost?
The cost of a penetration test depends on the scope of the test, system complexity, and type of test.
A basic test for a single website may cost a few thousand NIS. A comprehensive test for a large organization with complex infrastructure will cost tens of thousands of NIS.
It’s important to understand that the price reflects the depth and professionalism of the assessment. A test that is too cheap may be superficial and miss critical vulnerabilities. On the other hand, you don’t always need the most expensive option.
How do you choose a company to perform a penetration test?
Choosing the right company for a penetration test is critical. There are several things you should check:
Experience and specialization – How many years has the company been operating? Does it have experience in your industry? A fintech company, for example, needs a tester who understands the field.
Professional certifications – Certifications such as OSCP, CEH, or CREST indicate a high professional level.
Methodology – A serious company works according to recognized methodologies such as OWASP or PTES.
Report & support – The report should be clear and practical, with recommendations you can actually implement. A good company is also available for questions after the test.
The ExploiX team consists of cybersecurity experts experienced in penetration testing, risk assessments, and compliance with international standards.
Conclusion
A penetration test is an essential tool for any organization that wants to protect its systems and data. It reveals vulnerabilities before real attackers exploit them, helps meet regulatory requirements, and builds trust with customers and partners.
In a world where cyberattacks have become a question of when, not if, penetration testing is not a luxury – it’s a necessity.
Want to know the real state of your organization’s security?
Contact ExploiX to schedule a professional penetration test.